OVERSIZE! This item exceeds standard freight size limits. Additional shipping charges may be applied to your order at time of shipment. Originally developed as net buoys for North Sea fishermen, this product is now used as mooring buoys and fenders. Made from extremely durable marine grade PVC. Rope eyes have tensile strengths from 1300 to 2000 pounds. Screw plug valve for fast, easy inflation. The buoyancy is 60LBS.