This collet allows the quick removal of bullets from loaded ammunition to salvage components when used with the 1-1/2-inch-12 Bullet Puller. Compatible with the AmmoMaster-2 and AmmoMaster .50 BMG press. When used with the 1-1/2-inch-12 Bullet Puller, this collet allows the quick removal of bullets from loaded ammunition to salvage components. It's designed for use with the AmmoMaster-2 or AmmoMaster .50 BMG press.