Lady folding fat tire electric bike is very hot sales in EU.all parts is good quality brand parts . 1.frame use 20*4.0 kenda with 6061 Aluminum alloy frame. 2. motor use 36v250w / 48v500 /48v750w bafang motor power . 3. battery use 36v or 48v10.4ah /14.5/16ah panasonic or samsung lithium battery brake system use tektro mechanical disc brake or tektro hydraulic disc brake. 4. front fork use MOZO hydraulic or mechanical alloy suspention adjustable front fork 5. display use King-meter LCD or LED display /APT brand LCD display 6. alloy rear rack with LED light . 7.wellgo alloy pedal . 8. velo leather grip and saddle . 9.promax seat post and handlebar prowheel crank. 10.front &rear LED light .11 KMC chain. 12.shimano altus 7 speed