Kit contains many of the most common screws needed for a variety of gunsmithing operations. Kit Includes:2-56 windage screws (12)6-48 x .350 flat head screws (12)6-48 x .285 flat head screws (12)6-48 x .170 flat head screws (12)6-48 x .260 tapered head screws (12)6-48 x .187 headless set screw (12)6-48 x .090 headless plug screw (12)6-48 tap and correct size drill bit (1 each)8-40 x .475 flat head screws (6)8-40 x .290 flat head screws (6)8-40 x .125 headless plug screw (12)8-40 x .335 oval head screws (12)8-40 tap and correct size drill bit (1 each)Kit is packaged in a plastic case.