Extension Spring, Safety Drawbar, 302 Stainless Steel, Plain, End Type Closed Drawbar, Overall Length 6 In, Outside Dia 1.100 In, Wire Dia 0.125 In, Load 68.15 Lbs, Deflection @ Load 2.35 In, Spring Rate 29 Lbs/In, Meets/Exceeds ASTM A313 and AMS 5688