hand screwdriver set:

Manufacture and supply various full series of screwdriver bits, nutsetters, nut drivers, sockets, socket adapters, bit holders and quick changeconnectors for screwdriver bits

material types:Cr-V 6150,8660,S2

Surface treatment:sandblasted, tin-coating, Cu-coating, Ni-coating, Cr-coating, Zn-coating

Head types:PH, PZ, slot, Torx, square, hex, hex-plus, Z-spanner, Torx hollow, Torx plus, tri-wing

Type:single head, double head, head with round neck,non-magnetic and magnetic