FEATURES-Master Gunsmith Hex Head Ring & Base Screw Kit-Contains 10 each of 14 premium 3/32" hex style scope ring and base screws-Includes tweezers-Thread size gauge, which also doubles as a shortening jig used to grind a screw to a shorter length-Kit contains: (Hex size: 3/32)-#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)