Extension Spring, Safety Drawbar, 302 Stainless Steel, Plain, End Type Closed Drawbar, Overall Length 6 In, Outside Dia 1.192 In, Wire Dia 0.092 In, Load 13.67 Lbs, Deflection @ Load 3.25 In, Spring Rate 4.21 Lbs/In, Meets/Exceeds ASTM A313 and AMS 5688