ISO D Die Spring, Light Duty, Color Green, Chrome Silicone Alloy Steel, Finish Powder Coat, Overall Length 5-1/2 In., Outside Dia. 1-1/4 In., End Type Closed and Ground, For Hole Size 1-1/4 In., For Rod Size 5/8 In., Spring Rate 135.9 lb./in., Meets/Exceeds ISO10243