5/16" To 3/8", Forged Load Binder, For Use With 5/16" Grade 70 Chain Or 3/8" Grade 40 Chain, Made Of High Quality Forged Steel, Heat Treated, Electric Welded For Flexibility, Ball & Socket Construction, 15-1/2" Handle Length, 4" Take Up. 5,400 LB Working Load Limit, 10,800 LB Proof Test Load, 19,000 LB Minimum Breaking Strength.