Vestil Lockable Load Binders LBDR- series are ideal for trailers, campers or farmers. Used for chain binding applications in trucking and marine industries. Heavy-duty, forged steel construction. Proof capacity is 10,000 pounds while the ultimate capacity is 19,000 pounds. Provides 5,400 Lbs working load limit. Accommodates 5/16" to ⅜" chain. Insert lock thru hole for maximum theft protection.