Material: DURACON and SUS303 materials used Compatible with G-Craft part numbers 32012 and 32056 for Monkey backsteps. Depending on the height of the vehicle and the number of T's of the sprocket, the chain may interfere with the back-step parts, but by replacing the interfering parts with rollers, the chain will not interfere with the back-step parts. This is only for vehicles equipped with G-Craft back steps.