A TRADITION OF EXCELLENCE SINCE 1941: Since being founded in 1941, every tool that has been produced by Grace USA has undergone a rigorous inspection process which helps ensure genuine QUALITY and PRECISION in every tool that you can TRUST. PRECISION FOR THE PERFECT FIT - EVERY TIME: This set is built for precision and is accurately Hollow Ground to fit a wide range of screws found on handguns. BLADES THAT ARE BUILT TO LAST: The square shanked blades are hardened to R/C 52-56 and constructed of USA 8650 Chromium-Vanadium steel alloy with a black oxide finish while backed by our Forever Guarantee not to twist or chip. A HANDLE YOU'LL ENJOY HOLDING: Our screwdriver handles are turned to our exact specifications using Maine hardwood, delivering a strong, non-slippery grip - even when your hands are oily. The handles are topped off with a nickel-plated steel ferrule. CRAFTED FOR MANY APPLICATIONS: While our screwdrivers were constructed as the ideal tool for gunsmithing, they also can be used for woodworking, industrial, military, mechanical and home care needs.