This an electric transaxle complete with 24v-180W motor and eclectic brake. This can be used for mobility scooters, electric wheelchairs, power wagons, bikes, go-carts, more. I bought this for a go-cart I was building for my son. I cut a small non-critical part off to mount it but never did. I found another transaxle that better fit my needs. Feel free to ask questions about dimensions, modification, etc.