ISO D Die Spring, Light Duty, Color , Chrome Silicone Alloy Steel, Finish Powder Coat, Overall Length 1 In., Outside Dia. 5/8 In., End Type Closed & Ground, For Hole Size 5/8 In., For Rod Size 11/32 In., Spring Rate 181 lb./in., Meets/Exceeds ISO10243, Package Quantity 10 This high-strength chromium alloy steel spring has ground square ends. It is color-coded by duty performance for easy sorting with other springs when a replacement is needed. It is also designed to be interchangeable with other manufacturers' springs of the same size, type, and color.