Comprehensive mixed set of 27 commonly used 25mm impact resistant bits with 1x 60mm magnetic bit holder. Packed in a shock resistant case which will withstand the toughest of working environments. Formulated to absorb the torque peaks of highly powered impact tools Newly developed heat treatment process for longevity and performance Bit hardness is reduced at the body to withstand high loads Black phosphate finish for enhanced corrosion resistance" Driver Bit Size: PH0,PH1,PH2,PZ0,PZ1,PZ2,PZ3,TX10,TX15,TX20,TX25,TX27,TX30,TX40 Length mm: 25, 60 Shank Dia. inch: 1/4 Shank Type: Hex Material: Hardened Carbon Steel Timco Impact Driver Bit Set (Size 28pcs - 28 Pieces) in Black