... treatment: sandblasted, tin-coating, Cu-coating, Ni-coating, Cr-coating, Zn-coatingHead types: PH, SL, PZ, slot, Torx, square, hex, hex ... )Material: Cr-V steel,types: non-magnetic and magneticSurface treatment: Zn-coating, sandblasted, Ni-coating, Cr-coatingFitting nut size: 6mm-13mmOverall ...