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A worn or incorrect TIG collet can let the tungsten slip, sit off-center, or refuse to tighten securely. The Mtsooning 1/8" 10N25 TIG Collet Tips give you ten copper replacement collets for compatible 17, 18, and 26-series torch setups that use 3.2mm tungsten. This review checks the listing details, fit requirements, package contents, installation, and value so you can avoid ordering the wrong consumable. The kit is a practical buy for a dedicated 1/8" setup, but it is not a universal torch-parts assortment.
Quick Verdict
Rating: 8/10, recommended with caveats
Best For: Welders who use a compatible WP-17, WP-18, WP-26, PTA, Diamondback, or equivalent torch with 1/8" tungsten and a 10N25 standard collet.
Bottom Line: You get ten correctly labeled 10N25 copper collets in one compact package, which is useful for routine replacements and shop spares. The tradeoff is narrow compatibility, and the listing does not provide a specific product warranty or independent tolerance data.
Key Takeaways
- The kit contains ten Mtsooning 10N25 standard collets for 1/8" (3.2mm) tungsten electrodes.
- The current listing identifies copper construction and manufacturer part number SZ050070021788RK.
- Listed torch families include WP-17 and WP-26 air-cooled torches and WP-18 water-cooled torches.
- The listing also names Lincoln PTA-17, PTA-18, and PTA-26, Miller Diamondback DB17, DB18, and DB26, and Weldcraft WP-17, WP-18, and WP-26 models.
- The package includes collets only. It does not include tungsten, a collet body, cup, back cap, gas lens, or torch.
- The main risk is ordering by appearance instead of matching the 10N25 part number and 1/8" electrode size.
| Specification | Detail |
|---|---|
| Brand | Mtsooning |
| Product Type | Standard TIG torch collets |
| Collet Part Style | 10N25 |
| Manufacturer Part Number | SZ050070021788RK |
| ASIN | B07H3QT16S |
| Tungsten Size | 1/8" (3.2mm) |
| Material | Copper |
| Quantity | 10 collets |
| Package Dimensions | 2.28 x 2.09 x 0.39 inches |
| Listed Package Weight | 2.08 ounces |
| Compatible Torch Families | 17, 18, and 26 series that accept a standard 10N25 collet |
| Named Examples | Lincoln PTA-17/PTA-18/PTA-26, Miller Diamondback DB17/DB18/DB26, Weldcraft WP-17/WP-18/WP-26 |
| Package Contents | 10 collets only |
| Best Use | Replacement stock for a compatible 1/8" TIG torch setup |
Features and Specifications
The key specification is the 10N25 part designation. In the standard 10N collet family, 10N25 identifies the 1/8" or 3.2mm size used with matching tungsten. A 10N24 collet is for 3/32" tungsten, and it is not interchangeable with this 10N25 size even though the parts may look similar.
Mtsooning lists the material as copper and supplies ten pieces. That quantity gives you enough replacements to keep one in the torch, several in a bench organizer, and a few in a mobile welding kit. The listed 2.28 x 2.09 x 0.39-inch dimensions and 2.08-ounce weight describe the retail package, not an individual collet.
The Amazon page does not state a specific product warranty, material grade, dimensional tolerance, or independent test standard. Treat this as a value-focused replacement pack rather than a documented premium upgrade.
Before You Buy: Match three details before ordering: your torch family, the 10N25 collet number, and a 1/8" tungsten diameter. A 17, 18, or 26-series name alone does not guarantee that every nonstandard gas-lens or specialty setup uses this exact collet.
What Is the Mtsooning 1/8" 10N25 TIG Collet Tip Kit?
This Mtsooning kit is a ten-piece pack of internal TIG torch collets. Each slotted copper collet surrounds the tungsten electrode and tightens when you secure the back cap and matching torch components. Its job is to hold a 1/8" tungsten straight and firmly inside a compatible torch.
The kit is for replacement stock. It does not convert electrode sizes or replace the supporting collet body or gas-lens body. You still need the correct cup, back cap, shielding gas, and tungsten.
Compatibility With TIG Welding Torches
The listing describes compatibility with WP-17 and WP-26 air-cooled torches and WP-18 water-cooled torches. It also names Lincoln PTA-17, PTA-18, and PTA-26 models, Miller Diamondback DB17, DB18, and DB26 models, and Weldcraft WP-17, WP-18, and WP-26 torches.
A compatible torch model is only the first check. Your installed collet body or gas-lens system must also accept the standard 10N25 collet.
The same torch family can use standard bodies, gas lenses, or aftermarket front ends with different collet designs. Compare the current part number before relying on the torch name alone.
The 1/8" diameter is equally important. These collets should clamp 3.2mm tungsten, not 1.6mm or 2.4mm electrodes. Using a mismatched diameter can leave the tungsten loose or make the assembly difficult to tighten.
Who Should Buy It?
Best For
- You already use 1/8" tungsten and your manual or old part identifies a 10N25 collet.
- You maintain a compatible 17, 18, or 26-series torch and want several identical spares.
- You prefer a focused replacement pack instead of a mixed consumable kit.
Skip If
- Your tungsten is 3/32", 1/16", or another diameter.
- Your torch uses a wedge collet, specialty gas-lens collet, or another non-10N design.
- You need cups, collet bodies, back caps, gas lenses, or tungsten in the same purchase.
Build Quality and Materials
The listing identifies copper construction, which is standard for many TIG torch collets because the part must conduct current and tolerate heat near the torch head. The slotted shape lets the collet close around the tungsten as the back cap is tightened.
Material alone does not prove machining accuracy or service life. Mtsooning does not publish the copper grade, dimensional tolerance, hardness, or cycle testing for this pack. Inspect each piece before use, especially the slots and tapered end, and set aside any collet that appears crushed, bent, burred, or uneven.
The practical advantage is quantity. You can replace a worn collet promptly instead of over-tightening a damaged one.
Tungsten Grip and Weld Control
A correctly fitted collet helps keep the tungsten centered and prevents it from sliding when you adjust stick-out or tighten the back cap. That secure mechanical grip supports repeatable torch setup, especially when you remove the tungsten for grinding or contamination cleanup.
The collet cannot correct poor gas coverage, a contaminated tungsten, an unsuitable electrode type, incorrect polarity, or an unstable power source. Its benefit is narrower: it removes looseness at the tungsten-holding point when the size and torch components match.
If the electrode still moves, check the collet body, back cap, torch threads, and tungsten diameter. Another component may be worn or mismatched.
Installation and Setup Tips
Shut down the welder, close the gas supply when appropriate, and let the torch cool before servicing it. Remove the back cap, withdraw the tungsten, and take out the old collet. Clean loose dust from the torch components without forcing abrasive debris deeper into the head.
Insert the new 10N25 collet into the matching standard collet body, slide in a clean 1/8" tungsten, and reinstall the back cap. Set the tungsten extension for your cup, gas coverage, and joint access, then tighten only enough to hold the electrode securely.
Do not use extra leverage on the back cap. If the tungsten will not hold with normal hand pressure, stop and recheck the parts.
Pro Tip: Keep separate labeled containers for 1/16", 3/32", and 1/8" collets. Mixing similar-looking sizes is one of the easiest ways to create a loose tungsten setup.
Installation Safety
Never disassemble a hot or energized torch. Follow the welder and torch manuals for shutdown, coolant, gas, and maintenance procedures. On a water-cooled WP-18 setup, inspect for coolant leaks and damaged hoses before returning the torch to service.
Replace any collet with heavy oxidation, distortion, cracked slots, embedded debris, or unreliable grip.
Performance and Quality Assurance
The product page confirms the brand, 10N25 size, copper material, ten-piece count, and named torch compatibility. It also identifies ASIN B07H3QT16S and manufacturer part number SZ050070021788RK. Those details make the listing specific enough to match against your existing consumable.
The listing mentions quality-control testing but publishes no test method, tolerance sheet, certification, or product-specific warranty. Inspect the pieces and confirm fit before a critical job.
How It Performs in Real Use
For Garage and Hobby Welding
A ten-piece pack suits a home shop where small torch parts are easy to lose or contaminate. You can replace a collet as soon as it stops gripping instead of trying to stretch the life of one damaged piece.
For Shop and Repair Work
In a shared shop, identical spares reduce downtime when several compatible torches use 1/8" tungsten. Label the bin clearly as 10N25 so a 3/32" collet does not get mixed into the same drawer.
For Repeated High-Amperage Setups
When 1/8" tungsten is part of your established setup, keeping fresh collets on hand helps you respond to heat distortion or loss of grip. The pack does not change the duty cycle or amperage rating of your torch, so continue to follow the torch manufacturer’s limits.
For Mobile Kits and Long-Term Storage
The small retail package is easy to place in a parts case, but loose copper pieces can collect grinding dust and metal chips. A sealed, labeled compartment protects the slots and helps you identify the correct size later.
Storage and Maintenance Tips
Store unused collets in a dry container away from moisture, steel dust, and abrasives. Do not toss them loose with cups, torch wrenches, or sharp metal parts that can crush the slots or damage the taper.
Before installation, wipe the collet with a clean, lint-free cloth and inspect its shape. Do not coat it with oil or anti-seize unless your torch manufacturer specifically calls for it, because contamination near the tungsten and shielding-gas path can create avoidable welding problems.
Keep using a clean, straight collet only while it grips securely. Replace it when normal hand tightening fails or visible damage appears.
Pros and Cons
Pros
- Clearly identified 10N25 size for 1/8" or 3.2mm tungsten.
- Ten identical replacements support bench stock and mobile kits.
- Copper construction matches the material commonly used for standard TIG collets.
- Listing names common Lincoln, Miller Diamondback, and Weldcraft torch models.
- Focused pack avoids paying for unwanted tungsten sizes or unrelated parts.
Cons
- Limited to compatible 10N25 systems and 1/8" tungsten.
- No published material grade, dimensional tolerance, or independent durability test.
- Collets only, with no body, cup, gas lens, back cap, or tungsten included.
Is It Worth the Price?
This Mtsooning pack offers strong value for the price when you already know that your torch uses 10N25 collets. Ten identical pieces can cost less and create less waste than buying several mixed kits just to obtain one 1/8" size.
The best value goes to welders who regularly use 3.2mm tungsten, maintain more than one compatible torch, or want replacement stock at both the bench and jobsite. It is not the best fit for a beginner who still needs cups, bodies, back caps, tungsten, and several electrode sizes.
Buyers who prioritize documented OEM specifications may prefer a torch-manufacturer-branded 10N25 collet.
How It Compares to Alternatives
A Weldcraft 10N25 five-pack is the closer OEM-branded alternative for buyers who want a recognized torch-consumable name and need fewer pieces. WeldingCity also sells a five-piece 10N25 pack for 17, 18, and 26-series torches. The Mtsooning option makes more sense when quantity and straightforward replacement value matter most.
A full TIG consumable assortment is better when you need cups, collet bodies, gas lenses, back caps, or several tungsten sizes. A larger generic 10N25-only pack may suit a production shop, but ten pieces are easier to justify for a home garage or small repair operation.
Frequently Asked Questions
How do I confirm that 10N25 is the correct collet?
Check your torch manual, current collet, or consumables chart for the 10N25 part number. Also confirm that your tungsten is 1/8" or 3.2mm and that your installed standard or gas-lens body accepts this collet design.
Will these fit every WP-17, WP-18, or WP-26 torch setup?
Not automatically. The torch families are listed as compatible, but specialty gas-lens, wedge-collet, or aftermarket front ends may use a different part. Match the installed consumable system, not just the torch handle name.
Do these collets include a collet body or gas lens?
No. The package contains ten 10N25 collets only. You need the matching collet body or gas-lens body, cup, back cap, tungsten, and other torch components separately.
Can I use a 10N25 collet with 3/32" tungsten?
No. A 10N25 is sized for 1/8" or 3.2mm tungsten. For 3/32" or 2.4mm tungsten, a standard 10N24 collet is the corresponding size in the same family.
Can these collets be used for aluminum TIG welding?
Yes, when your aluminum TIG setup uses a compatible torch, a standard 10N25 collet, and 1/8" tungsten. The collet only holds the electrode, so tungsten type, shielding gas, polarity, machine settings, and technique still determine process suitability.
How tight should I make the back cap?
Use normal hand pressure only, following your torch manual. The tungsten should stay fixed without extra leverage. If it still slips, inspect the collet size, collet body, threads, and back cap instead of tightening harder.
When should I replace a TIG collet?
Replace it when the tungsten slips under normal tightening, the slots are crushed or cracked, the taper is distorted, or contamination cannot be removed. A visibly damaged collet should not be forced back into service.
What warranty comes with the Mtsooning collets?
The current listing does not state a specific product warranty period. Review the seller information and Amazon return terms shown at the time of purchase if warranty or return coverage affects your decision.
The Bottom Line
The Mtsooning 1/8" 10N25 TIG Collet Tips are a sensible 8/10 choice when your torch and 3.2mm tungsten setup already call for a standard 10N25 collet. The ten-piece quantity and clearly identified compatibility are the main strengths, while the narrow size range and limited published quality documentation are the main drawbacks. Skip this pack if you need a mixed consumable kit or cannot verify the exact collet style in your torch.
Ready to Buy?
Confirm the 10N25 part number and 1/8" tungsten size, then check the latest listing details.
