For playground and gymnasium equipment 1/0 and larger, farm and animal chains and many general purpose applications. The Playground equipment association has adopted the minimum of 1/0 inch coil chain. Features. No.20 Double Loop Carbon Steel Chain. Square pails. Do not use for overhead lifting. Do not exceed the working load limits for chain or componentsSpecifications. Size 0.14 Dia. x 275 ft.. Finish Zinc Plated. Material Carbon Steel