Extension Spring, Ultra Precision, 302 Stainless Steel, Plain, End Type Full Twist Loops, Overall Length 2 1/4 In, Outside Dia 0.360 In, Wire Dia 0.045 In, Load 8.86 Lbs, Deflection @ Load 1.75 In, Initial Tension 0.78 Lbs, Spring Rate 4.61 Lbs/In, Meets/Exceeds ASTM A313 and AMS 5688, Package 3