... *2.125 bike 3. Material: natural rubber 4. MOQ: 1000PCS 5. Black or customize About our company: GuangZong Zhengyu Bicycle Tyre Co.,Ltd with ... , handle bars, stems,seat posts, saddles, pedals,derailleurs, freewheels, shifting levers, brake levers, brake, crank & chain wheels, chains, cables & coats and other parts and accessories ...