Children's Bicycle factory Single weight: 12kg Material: high carbon steel Wheel size: 20 inches, 24 inches, 26 inches, 27.5 inches, 29 inches, width 2.125, 2.35 Optional speed: 21 speed, 24 speed, 27 speed, 30 speed Rim type: three-axle wheel, spoke wheel Spray paint: customizable logo, spray paint inside Frame structure: complete vehicle Folded or not: No Propulsion method: chain Brake system: dual disc brakes Frame type: hard frame Front fork type: spring fork (low gear without damping) Pedal type: ordinary pedal Brake type: front and rear mechanical disc brakes Suitable height: 120-160cm Suitable weight: 鈮?60kg Suitable for the crowd: teenagers and children Optional configuration, copy Shimano gearbox, original Shimano gearbox, Shimano front and rear fingers, original Shimano gear, internal wiring, hydraulic brake, magnesium alloy spoke wheels, aluminum alloy handlebars Applicable terrain: mountain, road Tires are optional: Kenda tires, Magis tires, the length of the vehicle is 140cm, the seat is 87cm above the ground, the handlebars are 93cm above the ground, gears, color wheels, breathable saddles, non-slip suits Color: black and red, black and blue, black and green, white and red, white and blue Model: Children's mountain bike c27Children's Bicycle factory website:http://www.sgbmountainbike.com/children-s-bicycle/