
8mm ER-16 Replacement Collet — Unlock Smaller Shank Forstner Bits
Need to run 8mm or 5/16" shank Forstner bits through your ER16 Collet Series extension? This replacement 8mm ER-16 collet has you covered. It clamps your smaller shank bits securely, so you keep boring clean, accurate holes without skipping a beat.
Just a quick heads-up before you add it to your cart. If you own the EXTN-ER16-MT2 Lathe Extension, you already have both an 8mm and a 10mm collet in the box, so you only need this part if you're replacing a lost or worn one. If you bought the EXTN-ER16 to use on its own, it ships with a 10mm collet only, and this 8mm collet opens up that smaller shank range for you.
Key Benefits
- Expands your bit range — adds 8mm and 5/16" shank Forstner bit capacity to your ER16 setup.
- Secure, accurate clamping thanks to the precision ER16 collet design.
- Direct replacement for a lost or worn collet, getting you back to work fast.
- Perfect fit with the full ER16 Collet Series Forstner bit extension range.
Main Applications
- Adding 8mm or 5/16" shank Forstner bit capacity to your standalone EXTN-ER16 extension.
- Replacing a worn or misplaced collet on your EXTN-ER16-MT2 set.
- Deep boring on the lathe with smaller shank bits.
Keep your kit complete and your options open. Whether you're replacing a worn collet or unlocking smaller shank bits on your standalone extension, this 8mm ER-16 collet gets you sorted. Add it to your cart and keep your projects moving.
Prices may vary. Printed on June 25, 2026.