This is the Highland Weight Plates - 2 Pack Features: Includes 2 plates and 4 pieces of bungee Plate is molded from rugged glass-filled nylon for maximum durability Recommended for 1, 2, 3 and 4 lb blocks of lead Numerous pyramid anchor points bite into the webbing to keep the plate securely in place Sidemount divers, technical divers, and free divers, this product is for you! Highland Weight Plates are a quick and easy way to add blocks of lead to a 2 in. (50mm) wide piece of webbing such as a harness or weight belt. This will allow for fine tuning of your weight requirement without having to do any disassembly. "