... fit scooters. more detail , pls contact us. we sell different single direction Clutch LikeTB50, HND50, GY6 50, AG50, DIO 50, TACT 50 ... 125, LEAD 150, WH100, VARROC, PIAAGIO, 6246, etc...Also sell Start Clutch as follows model. Like, GY6 125, GY6 150, CG125, CG150 ... , KBN100, ZH125, 5CA, YMH250, C179, YMH90, JH125, 5HK, etc... Start Clutch GY6-50