This Grace USA 7 Pc Screwdriver Set is accurately Hollow Ground to fit a wide range of screws found on handguns. This set is designed specifically to serve the needs of both professional and hobbyist gunsmith. Each screwdriver is constructed of USA 8650 Chromium-Vanadium steel alloy blades, and features a black oxide-finish and is precision made for snug fit between the driver and screw that minimizes the potential for damage to the screw head when torque is applied. Handles are composed of turned Maine hardwood, topped off with a nickel-plated steel ferrule. FeaturesHollow ground tipsMaine hardwood handlesBlack oxide finish IncludesBlade length includes: P1 2.0", P2 2.1", P3 2.1", P4 2.25", P5 2.75", P6 3.1", P7 4.0"Tip thickness includes: P1 .022", P2 .025", P3 .028", P4 .031", P5 .025", P6 .037", P7 .045"Tip width includes: P1 .08", P2 .125", P3 .125", P4 .150", P5 .200", P6 .200"...