Extension Spring, Safety Drawbar, 302 Stainless Steel, Plain, End Type Closed Drawbar, Overall Length 8 3/4 In, Outside Dia 1.375 In, Wire Dia 0.207 In, Load 195.75 Lbs, Deflection @ Load 1.35 In, Spring Rate 145 Lbs/In, Meets/Exceeds ASTM A313 and AMS 5688