Frame size: 20 inches Handlebar & Seat tube: Steel Chain: KMC Z33 Front hub / Rear hub: Bearing SF-A09 QR / SF-A30 Gear / Brake lever: Dacron ST-40 21 Gear Brake: Dacron V Breake Alloy Rim: Dacron Double Wall Tyre: Mitas Ocelot 29x2.10 Accessories (not included): Chain housing, Front & Rear carrier, Front & Back lighting, Lock // Assembly: Bicycle comes in the original factory package, 85% assembled (front wheel, handlebars, seat, pedals might be removed and need installing). Tools for assembling the bicycle are not included in the package. Client is responsible for correct bicycle assembly, preparation for use and initial maintenance of the bicycle at any service centre (service record in the maintenance sheet/warranty card is mandatory). In case of violating this rule warranty will not be effective. Regarding the assembly of the bicycle we recommend to consult a qualified technician.