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Equipped with 8 different bits of double heads, different shapes and size, meeting different usage demand Bit is made of high quality S2 superior alloyed steel material, which is processed by vacuum heat processor Hardness of bits: HRC≥59, torque value exceeds 70% than German standard Ratchet screwdriver is more easily to use and save lot of effort during usage BITS H6.35*75L*1.0*5/PH1 H6.35*75L*1.2*6/PH2 H8*75L*1.2*8.0/PH3 H6.35*75L*H1.5/H2 H6.35*75L*H2.5/H3 H6.35*75L*H4/H5 H6.35*75L*T15/T20 H6.35*75L*T25/T30