Model:20S112-F 
Speed:21-sp 
Frame： 20"steel，w/suspension
Fork： 20"steel
Handel bar: steel ED
Handel stem: Alloy,black
Rims: Alloy,black,140H
Tire & tubes 20"x3.0,black
Gear system: SUNRUN 21-sp
Brakes: F/R V-brakes,alloy,black
Chain: KMC
Pedals: alloy,w/balls
Saddle: two-tone color