Extension Spring Utility 302 Stainless Steel Plain End Type Crossover Center Loops Overall Length 1 1/4 In Outside Dia 5/16 In Wire Dia 0.029 In Load 2.77 Lbs Deflection @ Load 1.42 In Spring Rate 1.66 Lbs/In Meets/Exceeds AISI 302/304 and ASTM A313 Package 6