Pachmayr Master Gunsmith Screw Kit, 277 Pieces, Black 03054 This new 277 piece kit is for the firearms owner and gunsmith. This set contains 12 each of 23 different hard to find screws that fit common applications in many guns. Screws are contained in handy storage kit and the kit includes tweezers. Any shooter focused on repairing their own guns should own the Master Gunsmith 277 Piece Screw Kit. This kit comes with a wide selection of small gun screws for all your gunsmithing needs.