The Ultra-Tow? 5/16in. Lever Chain Binder has a 5400-lb. working load and 19,000-lb. breaking strength. Works with 5/16in. Grade 70 or 3/8in. Grade 43 chain. Provides good leverage to handle heavy-duty jobs. Great for securing heavy equipment, cargo and more. Breaking Strength: 19,000 lb, Included (qty.): 1, Working Load Capacity: 5,400 lb 5400-lb. working load19,000-lb. breaking strengthUse with 5/16in. Grade 70 or 3/8in. Grade 43 chainLeverage action tightens chainToggle handle locks in place to hold loadDouble hooksFor securing heavy equipment and cargo