Description The RCBS Die Locking Ring Assembly (Pack of 5) allows the reloader to set up dies and lock them in place so they can be removed and replaced without having to recalibrate. Fits on standard 7/8"-14 threaded dies. It is made up of steel. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.