20 inch mountain bike 21 speed derailleur disc brakes, front shock absorber, bike

About Product:20 inch mountain bike 21 speed transmission dish brake, and Qian shock, and speed bike high carbon steel frame, and Hi m Novo TZ-30 before and after refers to dial, and Taiwan Yu ball before and after Cone, and macro high aluminum combination put State, and double Qian fork with shock device, and before and after double dish brake, and movement type car seat, and wear pedal Board, and double aluminum material, and sealed waterproof in the axis, and aluminum gate put, and small yan styling handlebar color: red blue green white