The chinese scooter magnetic drain plug kit is a must for any engine. The issue is the chinese made scooters are not equipped with them. Upgrade you scooters drain plugs in return get more life out of your engine. Small metal shavings from engine wear float around in the engine. Why not stop this from happening? Its perfect time to do this when you change your engine oil and drive oil. This kit will fit all GY6 and qmb139 engine. This includes 49cc-150cc engines