Frankford Arsenal Aluminum Bullet Puller Collets, Set of 3 SPECS: Set of three, replacement aluminum collet set DIMENSIONS: Works with just about every bullet from 22 Hornet to 45-70 EASE OF USE: Set assembled collet on flat surface and roll rubber o-ring over the top and into the groove DURABLE: Constructed of aluminum with rubber O-Rings FUNCTION: Works with the Frankford Arsenal Impact Bullet Puller