The RCBS 1"-14 threaded bullet puller is designed to work in presses where there is a threaded insert that can be removed and 1"-14 threads are exposed. It will not work in a press with standard 7/8"-14 threads. The puller is designed to easily pull and not damage jacketed bullets but it can leave marks on the bullet. Not designed to pull lead bullets.
Caliber listed in the description is the size of collet that comes with the puller
Type: Collet Bullet Puller
Function: Pull bullets from cases
Not for use with lead bullets, may leave marks on jacketed bullets
Puller body is 1" diameter. This size is not interchangeable with standard 7/8" pullers or collets.
Fits in custom reloading presses and presses where there is a threaded insert that can be removed.