Extension Spring, Ultra Precision, 302 Stainless Steel, Plain, End Type Full Twist Loops, Overall Length 3/4 In, Outside Dia 0.300 In, Wire Dia 0.037 In, Load 6.26 Lbs, Deflection @ Load 0.26 In, Initial Tension 0.56 Lbs, Spring Rate 22.07 Lbs/In, Meets/Exceeds ASTM A313 and AMS 5688, Package 3