The material of screw hook is Q **5, the size can be 2#, 3#, up to
*0#, the thickness of wire can be from 1.6mm to *0.0mm. The surface
treatment is zinc plated, brass plated or nickel plated. The can be
used in picture hanger, windows and doors, Mosquito net, Crafts,
curtain fittings, etc.