... hole 14-17 or 17-20 2)For ATV,Dirt bike,Go Kart 3)420/428/520/530 4)45# Steel ... )Inner hole 14-17 or 17-202)For ATV,Dirt bike,Go Kart3)420/428/520/5304)45# SteelFit for following ... ,Linhai,Honda,Zongshen, Buyan,Polaris,Bashan,Hsun,Shineray,Jinling,kazuma,Lifan,Taotao,Suzuki,chinese,gsmoonFit for following displacement ATV250cc,50cc,110cc ... -20mm 15 Tooth 520 20MM Sprocket for ATV Quad Dirt Pit Bike Parts