Compression Spring Conical 302 Stainless Steel Finish Plain Overall Length 1/2 In Wire Type Round Wire Dia 0.049 In End Type Squared and Not Ground Large Outside Dia 0.720 In Small Outside Dia 0.343 In LD @ 50% FREE LENGTH 5.73 Lbs LOAD @ SOLID 9.21 Lbs Spring Rate 22.92 Lbs/In Meets/Exceeds ASTM A313