Master Gunsmith Screw Kit-142 Kit Contains 10 each of 14 premium 3/32" hex style scope and base screws. These difficult to find screws are favored non-slip replacements for slotted screws. Set includes tweezers and thread size gauge/shortening jig. Kit Contains: #6-40 Fillister Head (3/8, 1/2) #6-40 Oval Head (1/4, 3/8) #6-48 Fillister Head (1/4, 3/8, 9/16) #6-48 Oval Head (1/4, 3/8) #8-40 Fillister Head (1/4, 3/8, 1/2) #8-40 Oval Head (1/4, 1/2) Master Gunsmith Screw Kit-202 Piece Kit Contains 10 each of 20 sizes of premium 6-Lobe style scope and base screws. These difficult to find screws are favored for their non-slip drive Mfg: Tacstar
