Extension Spring Utility Standard Steel Oil End Type Full Twist Loops Overall Length 1-3/32 in Outside Dia 0.230 in Wire Dia 0.020 in Fabric Sleeve Outside Dia 0.31 in Load (Lbs.) 0.53 Deflection @ Load 0.54 in Spring Rate (Lbs./in) 0.69 Meets/Exceeds ASTM A227/A228 and AMS 5112