71 pcs hex key set screwdriver bit set meet SGS demand 71pcs tool bit hex set screwdriver bit(1) Product informations1. Code : HY-Z134A2. Material : CRv bit meet the SGS demand3. Product list:16pcs 50mm Cr-V bits:PH0,PH1,PH2,PH3,PZ0,PZ1,PZ2,PZ3, SL3,SL4,SL5,SL6,SL7 T10,T15,T20 32pcs 25mm Cr-V bits:S0,S1,S2,S3,T10,T15,T20,T25,T27,T30,T35,T40 PH0,PH1,PH2,PH3,PZ0,PZ2,PZ3,SL3,4,5,6 H2,H2.5,H3.0,H4.0, ...