The RCBS Bullet Puller Collet has been newly redesigned to make it easier than ever for reloaders like you to pull jacketed bullets from their brass cases without doing damage to either part. This puller features standard 7/8-inch-14 threads to ensure that it works with almost all single-stage reloading presses. To use the RCBS Bullet Puller Collet, simply set up your die in the press with the right caliber collet, then put your cartridge in the press and lift up on the ram. Next, tighten the collet and lower the ram to pull the bullet out. It is as simple as that.