Gates Powerlink Standard CVT Drive belt size 669-18-30. Commonly found on 50cc 4-stroke QMB139/GY6 engines with 10" rear wheel.

Fits Twist N' Go Venice 49cc, Twist N' Go LS 49cc and Twist N' Go Milano 50 (49cc) '04-'07.

Baja SC50, Panterra Freedom 50cc, Panterra Fusion 50cc, Panterra Retro 50cc, QMB139 50cc/49cc , Roketa, Schwinn Hope 50, Schwinn Laguna 50, Twist N' Go LS 49cc, Twist N' Go Milano 50 (49cc) '04-'07, Twist N' Go Venice 49cc, Various unlisted makes/models