Extension Spring Utility Standard Steel Oil End Type Machine Half Loop Overall Length 5-21/32 in Outside Dia 0.880 in Wire Dia 0.120 in Fabric Sleeve Outside Dia 1.01 in Load (Lbs.) 35.00 Deflection @ Load 1.00 in Spring Rate (Lbs./in) 17.76 Meets/Exceeds ASTM A227/A228 and AMS 5112