Blackhawk BoltMaster Replacement Jaws. We offer complete line of BlackHawk Entry Tools. For our complete selection of products by Blackhawk Tactical on sale please visit our Blackhawk Tactical page. For more Entry Tools please visit our Entry Tools store section. Features of Blackhawk DE-BMRJ Bolt Master Replacement Jaws: Specifically heat treated cutting edges finest available anywhere For use on security chains chain link fences and non-case hardened locks Package Contents: Blackhawk Bolt Master Replacement Jaws DE-BMRJ