Get the right impact driver bit set most durable bits that will improve your work. Heat-treated S2 steel bits rust and corrosion resistant with fully polished. This 14 piece tamper proof torx bit set has high precision and excellent workmanship, smooth surface, with 1/4 inch quick release hex shank, work faster and easier.

The security bits have experienced torsion and hardness test. The results of tests show that the maximum torsion force of bits is 180-200N and the hardness of bits is 57-59HRC. The high torsion and proper hardness avoid the bits break and wear.

Life made easier with more fun, along with MulWark torx security screwdriver set!