Extension Spring Utility MBHD Carbon Steel Zinc Plated End Type Machine Hooks Overall Length 6 in Outside Dia 0.960 in Wire Dia 0.120 in Load (Lbs.) 51.57 Deflection @ Load 2.53 in Initial Tension (Lbs.) 15.14 Spring Rate (Lbs./in) 14.43 Meets/Exceeds ASTM A227/A228 Package Quantity 3