10 PCS S2 screw driver bit: powerful, tough and porecision sk-2 material Hrc. material:S2 STEEL,CRV STEEL surface:sand blast

10 PCS S2 screw driver bit:powerful, tough and porecision sk-2 material Hrc.Material: S2, Cr-V ,6150, etc. Different  length  is available(50mm-300mm)

Surface treatment: sand blast, phosphating red, Cr-coating, nickle plating, or any other special finishes be required by customers

Type:double head, non-magnetic and magnetic

Head types:Phillips ph1 and ph2

Special heat-treated

Quality guarante and lifetime more longer

if customers need any other similar parts, also can send samples or drawings to show us the specs

10 PCS S2 screw driver bit