Carbon shimano 21speed road bicycle
frame: steel.

Tyres: 26*195mm. bl

Rim: Al alloy ,

Front Fork: steel

Front brake: alloy V- brake 

Rear brake: alloy V- brake 

Speed gears:  18 or 21speed .

F/R shift lever: grip lever

Rear derailleur: SHIMANO, bl

Handlebar: aluminum

Stem: alloy

Brake lever: alloy

Chain: steel,

Chain wheel: steel with cover.

Saddle: sport style saddle.

Seat post: alloy,

Pedal: half alloy