Durable Specification: Heavy duty stainless steel u pins of 2.5mm in diameter, 15cm in length and 4cm in width have better bearing capacity than 4 inch pins. Reusable. 6 inch piles provide the best support and are easier to install on hard rocky ground. Galvanized Surfaces: Our high performance U-shaped garden poles are hot-dip galvanized for superior rust protection. Immersion in molten zinc to provide a thicker coating than alternatives to plating. Buffer Washer: Made of PP, the washer is hard and durable and can be used for a long time. Different shape hole design makes them flexible for U-shaped wall nails and garden stakes. Diagonal Ends: The spikes and diagonal ends of our garden poles are easy to attach and remove from the ground. Making them suitable for use on soft or hard ground, rather than sharp plastic piles. U-shaped design provides higher ground voltage. Perfect Fixed Punch: Galvanized spikes are ideal for fixing landscape wrap, groundsheets, weeds, artificial lawns. It can also be used for other outdoor applications such as fixing pipes along the ground, spray pipes and irrigation pipes. Packing list: 50 * Fixing Nails We only sell the items in the picture, and other items in the picture are for reference only. Due to differences between displays, the pictures may not reflect the actual color of the item. Minor dimensional errors are allowed due to manual measurement.