Introductions:Here is an introduction to our 24/26in high Carbon Steel 100kg 21 Speed Red Black Mountain Bike, which brakes sensitively and makes driving more stable and reliable. It also uses a thick shock-absorbing front fork, which can comfortably cope with various road sections and has a good shock- absorbing effect.Features:1. Double-kill disc brake system, more stable and reliable2. Thickened shock-absorbing front fork3. High carbon steel material, strong and reliable4. Simple and stylish appearanceSpecifications: 1. Product Size: 24/26 Inches2. Cushion Height Adjustment Height Range: 800~970mm3. Gear Shift: 21-Speed (Front 3, Rear 7)4. Frame: High Carbon Steel5. Front Fork: Shock-Absorbing Front Fork6. Handlebars: Mountain Bike Handlebars High Carbon Steel Sand Black 620mm7. Stem: Aluminum Alloy Stem8. Front And Rear Brakes: Mechanical Disc Brake Aluminum Alloy