With its very low weight, it is suitable for both road and off-road racing. For those who want to get the last out of their machine.1x Gold DID 520 ERS3 Series Chain. Product Type: Chain and Sprocket Kit. Plate Thickness - Inner: 1.8mm. Plate Thickness - Outer: 1.8mm. Tensile Strength (kN): 26.3kN. Weight per 100 links: 1.17kg. You can send us a message by using the "Questions and answers" section towards the bottom of the page.