9 in 1 precision screwdriver bit set 1.Material: stainless steel, or CRV, 2. Packing:double clamshell, 1. LOGO: customized2. Accept OEM design3. Surface coating ... ,3,SL6,PH1 2 pcs 50 mm bits:SL5,PH2 1 pcs 60mm extension bar1.Package style :Double blister2.Export box ... .W:18/17 KG5.Q'ty of 20" :64000 set 9 in 1 precision screwdriver bit set