1The nail is a standard wire diameter, hardened material, no staples, no nails, and constant nailing. 2Suitable for nail guns. Can be used to cement walls, trunking, bricks, wood, thin metal sheets (tubes), etc. 3Different size can meet different using needs. 4High quality material and exquisite process, durable and precise. 52500 rounds nails can be used for a long time.