Product description
Features:1)HIGH QUALITY IMPACT DRIVER BITS2)MATERIAL:S2 /CRV/CARBON STEEL3)MANUFACTURED BY CR-MO(S2) STEEL ENSURING HIGH TOUGHNESS AND HIGH TORGUE4)HEAT-TREATED WITH THE HARDNESS OF HRC59-61 ENSURING HIGHHARDNESS AND STRONG TOUGHNESS5)LASER PRINT SIZ