Sturgeon Bay Stacker cable strap with nail in tan color is made of plastic for added durability. It has a 1/2 Inch Dia. It includes a highly insulated plastic saddles that prevent cable damage and intends to provide the safe installation of electrical wire and cable. The nails and screws straps used is zinc plated and has a yellow chromate to prevent corrosion. It is ideally used for securing more than one non-metallic sheathed or underground feeder cable