This kit contains the Y axis parts for the Ender Extender 400 which fits the original Ender 3 (not pro) version of our kits. These are the parts you need in case you ordered the pro kit by mistake.
Y Axis 2040 extrusion
Y motor mount (printed) with screws/nuts
Y belt tensioner (printed) with screws/nuts
Y Belt for 400 non pro size kits.