With this kit you can stop searching for those hard-to-find screws that are stocked by only a few specialized manufacturing supply houses . . . we have done the looking for you. You can have that "just right" screw right at your fingertips, in a handy, very complete kit . . . and at quite a substantial savings. The kit contains 12 each of the 20 popular size screws from No. 0 wire gauge to No. 12 wire gauge in long enough lengths to fit many difficult jobs, yet they can be cut off and fitted where a shorter length is required.Slotted head drive type. We strongly suggest that after the screws are cut and trimmed, they be dipped in OXPHO-BLUE to give them a blue color as w Mfg: Brownells SPECS: Blued steel. Slotted head drive type. Kit contains 12 each of 20 screws, 240 total. Refills sold 12 per Pak. ½" = 12.7mm, 7/8" = 22.2mm, ¾" = 12.7mm 1" = 2.5cm.