High qyality with Chromed Excellent heat treatment,high hardness,high flexiblility Anti-skid plastic handle 8PCS Impact Driver SetTC-002Bits size:S8x80: PH3,SL8 S8x35:PH1,PH2, PH3,SL8,SL10,SP2 Bit material:S2,Cr-v,45# are avaliableMetal box 8PCS Impact Driver Set