This Sutton Tools Drywall Screwdriver Bit has a Phillips tip, the most widely used drive system in the world. The design absorbs torque peak reducing slippage and breakage. This magnetic tip increases productivity and eliminates frustration when working at awkward angles or in tight spaces. This screwdriver bit has thrice the torque, which is tested to exceed DIN standards by up to 330%. It has 1/4" hex insert with a retaining notch for use in bit holders and hand drivers and 1/4" hex shank with a power groove for use in power tools and quick change adapters. Its tough grade high-alloy Chrome Vanadium steel absorbs shock and offers superior performance. Absorbs torque peak reducing slippage and breakage Magnetic tip increases productivity and eliminates frustration in awkward angles 3x torque that is tested to exceed DIN standards by up to 330% 1/4" hex insert with a retaining notch and 1/4" hex shank with a power groove Tough grade high-alloy Chrome Vanadium steel absorbs shock and offers superior performance