Otis Technology, Pro Plus, Gunsmithing Punch Set, Brass, 5 Piece WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. 5 piece gunsmithing punch set 3/32, 3/16, 5/32, 1/8 & 1/4 4" length Excellent for assembly/disassembly of firearms, install/removal of pins, aligning parts and more Corrosion resistant brass Hex machined with chamfered striking surface to reduce burring Machined in the USA Product Description For all your at-home gunsmithing needs, this gunsmithing punch set gets the job done. Includes 5 brass 4" long pin punches sized 3/32, 3/16, 5/32, 1/8 & 1/4. Assemble/disassemble firearms, install/remove solid pins, align parts, hold springs in place and more. Made from corrosion resistant brass and hex machined. The chamfered striking surface reduces burring. Machined in the USA.