PACHMAYR 03061 Pachmayr Master Gunsmith Torx Head Screw KitContains 10 each of 20 premium 6L-10 and 6L-15 style scope ring and base screws These difficult to find screws are favored for their non-slip design Packaged in a handy storage box with individual compartments for each size screw Kit includes tweezers and a thread size gauge which also doubles as a shortening jig used to grind a screw to a shortly length KIT CONTAINS 6-40 Fillister Head T-10 3 8 1 2 6-40 Oval Head T-10 1 4 3 8 6-48 Fillister Head T-10 1 4 3 8 9 16 6-48 Oval Head T-10 1 4 3 8 8-40 Fillister Head T-10 1 4 3 8 1 2 8-40 Oval Head T-10 1 4 1 2 8-40 Fillister Head T-15 1 4 3 8 1 2 8-40 Oval Head T-15 1 4 3 8 1 2