TorkCraft - Impact Bits Type: Pozi Size: 2 x 50mm Application: Impact bits and bit holders provides extended lifetime compared to standard insert bits and bit holders. For driving screws when using an impact driver or in high torque applications. Spinning collar on quick change bit holder allows for precision work Precision tip for better fitment which reduces stripping and increases durability Torsion zone absorbs impact force and high torque output Black phosphate coating resists corrosion and increases bit life