You get a full selection - 168 Socket Head Screws: 1 dozen each of 14 different screws includes 8 Fillister Head and 6 Weaver Oval Head styles in 4 lengths and 3 thread sizes (6-40, 6-48 and 8-40). Then, when custom fitting is required, or you need to shorten a screw for a particular job, we've included a hardened steel Checker/Shortener Jig to make it easy to grind any of the screws to length.
SPECS: Made for us in U.S. to same head/shape specs as the
Slotted Sight Base Screws. 3/32' socket. Blued. Kit includes: 168
screws, compartmented Kit Box, Tweezers, Checker/Shortener Jig
and Chart showing bases/rings/ribs/etc., that the screws fit. Refills
sold 12 per Pak. 3/8' (9.5mm), Ѕ' (12.7mm), ј'
(6.35mm), 9/16' (14.28mm). Any screw may require minor
fitting.