• SCREW DRIVER BITS — 41 pieces driver bits sets with 1pieces magnetic impact bit shaft holder and 1pieces mini wrench, made of high quality S2 Alloy Steel which is anti-impact and tough, great wear resistant.
• PZCKAGE INCLUDE —Totally 41 pieces insert bit holder. (10) x ph1-1 inches, (20 ) x ph2-1 inches, (10 ) x ph3-1 inches, (1) x bit holder-3 inches, (1) x mini wrench.
• IMPACT RATED BITS — Impact Shock Absorbent Zone stands up to impact drivers. It can be handle a new generation of higher torque impact drivers.
• PRECISION MACHINED TIP — Heat-treated manufacturing for stronger bit. Precision machined tips with superior fitment for full contact fit and longer life.
• 1/4 Hex Shank — 1/4 inch (6.35mm) hex shank, fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth.