Hornady #7 30 Caliber (.308 Diameter) Cam-Lock Bullet Puller Collet
The Hornady Cam-Lock Bullet Puller is one of the fastest and easiest ways to pull bullets with a reloading press. Collets are the part of the system that clamp to the bullet so it can be removed quickly and easily.
This is just the Collet.
Woks with Hornady cam lock bullet puller