This Rocker Arm and Holder

will fit to following GY6 & 139QMB 50cc base engine

Kymco: Freeway 50,Filly 50cc,Agility 50cc

Taishan:Sport 50cc,Commuter 50cc

Baotian:50QT-9,50QT-11

Sinski:XSJ50QT-B,XSJ50QT-6

Dotera:50QT-11

Jalon:JL50QT-18

and

other Chinese Cloned GY6 base 50cc engine