Grace USA 3 PieceSquare Recess ScrewdriverSet is precision manufactured & hand assembled entirely within the United States. It is designed specifically to serve the needs of both professional and hobbyist gunsmith, woodworker, mechanic and machinist. 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 QUALITY and PRECISION in every tool that you can TRUST PRECISION FOR THE PERFECT FIT - EVERY TIME: This set is accurately Hollow Ground to fit Browning A-5 tang, mainspring, front and read triggerplate, and carrier screws 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 hardwo