torx is recognized as the most efficient fastening system because of their ability to transfer greater torque, reduce end load and virtually eliminate tool slippage 14105 impact bit holder 107-11 impact torx bits - t30, t40, t45, t50, t55, t60 x 35mm 107-11 impact torx bits - t30, t40, t45, t50, t55, t60 x 80mm 168h ballpoint hex screwdriver 2.5mm