All-terrain mountain 26 Inches fashion rims with suspension fork for added stability. For riders of different heights, conquer any off-road trail with ease. Front and rear double disc brakes perfectly increase safety and controllability for bikers. Free pedals, assembly and debugging tools include in packages. 85% of the parts have been pre-assembled. Any problem pls feel free to contact us. Solid high carbon steel frame, front-rear disc brakes combine provide enhanced stopping power for a durable and responsive riding experience on a variety of terrain. The 3-speed front derailleur and the 7-speed rear derailleur provide 21-speed super-smooth shifting is deal for daily rides to school, work, or a cross country ride. The gears can be changed smoothly by fingers and accurately on the slide on almost any surface or slope.