20X Timber Fencing Staples These U Nail Staples are an ideal fastening for securing wire, cable, and chains in place easily and efficiently for a clean, neat and tidy appearance. They are made from steel for strength and durability, and they also have a galvanised finish providing protection against rusting and corrosion making them perfect for both outdoor and indoor applications. Our Galvanised U Shaped Staples are easily hammered into wooden fence and gate posts, as well as any other wood around your home, garden or workplace. A space should be left between our Timber U-Nails and the material that it's being driven into for easy removal with a claw hammer.