The Shimano Steps chainring is a direct replacement part for the Shimano Steps FC-E6000 ebike drive units. Original Shimano Steps Chainrings Each Shimano Steps chainring is available in 38 tooth configuration and with a single chainguard, double chainguard and without a chain guard. Simply select the correct one to match your current set up from the drop down menu. Each chain ring is designed to work with the 1 x 9 speed and 1 x 10 speed configurations. Chainring Removal: To remove and install the chainring is easy with the right tools and following these simple steps: Perform replacement with the chain installed to the rear wheel. Remove the crank arm cap, then remove the crank mounting bolt with a 14 mm socket wrench. After that, remove the right side crank using the Shimano Steps Crank Arm Extractor removal tool. While holding the wheel, use the Shimano Steps O Ring Chainring Tool and the Shimano Steps bottom bracket tool to loosen the lock ring in the clockwise direction. Once loose simply remove the chainring and replace with a new original Steps chainring.