wire forming materia:steel wire diameter:3.5mm surface treatment:zinc plated wire formingmateria:steelwire diameter:3.5mmsurface treatment: ... expect these from us:Various of springs and wire form, even punch fitting of hardwareUsage:auto,motorcycle ... ,mine,furniture,elevator and so onWide range offered wire diameter from 0.1mm to 80mmHigh quality and ... ,so send us your specifications now. wire forming