Compression Spring, Conical, 302 Stainless Steel, Finish Plain, Overall Length 1 1/4 In, Wire Type Round, Wire Dia 0.059 In, End Type Squared and Not Ground, Large Outside Dia 0.975 In, Small Outside Dia. 0.343 In, LD @ 50% FREE LENGTH 8.47 Lbs, LOAD @ SOLID 15.34 Lbs, Spring Rate 13.55 Lbs/In, Meets/Exceeds ASTM A313