Tough-1 Horseshoe Salt Block Holder Made from heavy-duty plastic, this durable salt block holder won't rust or corrode. The salt block will stay in place even after the horse has licked 95% of it. Design will prevent your horse from being cut. Features: Installs easily with just three screws Will hold standard 4 lb. salt block Polymer horseshoe design Made in U.S.A. Please Note: Salt block and screws/hardware to mount this item are not included.