24inch adult electric tricycle is good for old man.all parts is good quality brand parts . 1.frame use 24*2.125 kenda with 6061 Aluminum alloy frame. 2. motor use 36v250w / 48v350 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 4. front fork use no suspention alloy front fork or RST suspention front fork. 5. display use King-meter LCD or LED display /APT brand LCD display 6. alloy rear basket 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