We produce roofing nails. 1): umbrella head, smooth body, twist body; ... we are one of the leading manufacturer of roofing nails in this area.Roofing nails with umbrella head1) Dia: BWG8~BWG132) Size: ... Besides,we also produce many other kinds of nails and screws,such as drywall screw,chipboard screw ... ,self-tapping screw,self-drilling screw,common nails,concreate nails and so on.Please feel free to ...