Extension Spring Utility 302 Stainless Steel Plain End Type Crossover Center Loops Overall Length 1 3/4 In Outside Dia 3/8 In Wire Dia 0.035 In Load 3.99 Lbs Deflection @ Load 2.06 In Spring Rate 1.63 Lbs/In Meets/Exceeds AISI 302/304 and ASTM A313 Package 6