The Clymer .30-06 Pull Through Chamber Reamer is used for precision cutting of minimum length chambers, enhancing shooting accuracy.
It is designed to cut the shoulder, neck, and throat of the chamber to prevent crimping of ammunition, and should be used as a finish reamer only after initial cutting with a conventional reamer.
The set includes a Pull Through Reamer, Thrust Bushing, and Extension Shaft, and is compatible with both bolt action and semi-auto rifles in .308 & .30-06 calibers.