Detailed Product Description bike;MTB,mountain bicycle,racing bikeFrame:26" MTB ,Steel Fork:Suspension,steelDerailleur: 21S ,shimano 21speed RD:shimano TX-50,FW:shimano TZ-07shifter:shimano RS-31Rim :Alloy Tyre:26"x1.95 ,A/V ,with white thread Brake: V Brake ,Alloy