We're tickled as all get out to offer our Fixed-Blade, Gunsmith's Screwdriver Set designed and developed by gunsmiths for those gunsmiths who love solid, fixed-blade screwdrivers that fit their gun screws right - and simply won't have it any other way! THE PERFECT TIP & BLADE We started with the tip of the blade, the part that has to fit the gun screw properly, and the most important part of a gunsmith's screwdriver. The blade tips are then custom, precision-ground in a crisply radiused, hollow-ground shape to give maximum strength. And, the ideal parallel section is ground at the tip to fit the screw slot properly through the full width and depth of the slot. Mfg: Brownells Stock # Screwdriver # Shank Dia. Blade Thickness #080-451-001 1 .120 .030