These fill open mounting screw holes for most scope bases or sight base/ramps. The plug screws are offered in black oxide finish and stainless steel, as well as in a straight design for flush mounting or headed to provide a positive stop. Kit includes tweezers and thread size gauge. Slotted for screwdriver installation. Contains 12 each of 10 commonly used, but easy to lose, plug screws. Kit contains #6-40 Plug black oxide #6-48 Plug stainless steel #6-48 Plug Screw, headed stainless steel #8-40 Plug stainless steel #8-40 Plug Screw, headed stainless steel #6-48 Plug black oxide #6-48 Plug Screw, headed black oxide #8-40 Plug black oxide #8-40 Plug Screw black oxide #10-32 Plug black oxide Weight 7 oz These fill open mounting screw holes for most scope bases or sight base/ramps The plug screws are offered in black oxide finish and stainless steel, as well as in a straight des Kit includes tweezers and thread size gauge Slotted for screwdriver installation Contains 12 each of 10 commonly used, but easy to lose, plug screws