round U bolt 1) material: low carbon steel 2) diameter:1/2" 3) thread length:5" 4) finish:zinc plated round U bolt1) material:iron,steel,stainless steel and so on2) finish:zinc plated,nickle plated chrome plated ,powder coating etc3) OEM service is welcomed4) make mould by your drawing or sample5) having our own zinc plating factory. round U bolt