... Bike Bell 4.Material: Aluminum, steel Aluminum Alloy Bicycle Bell Product Description: ProductNew Hot selling Bicycle bellModelTP-720106Sizediameter:56mmColorblack/red/blue/yellow/black ... , handle bars, stems,seat posts, saddles, pedals,derailleurs, freewheels, shifting levers, brake levers, brake, crank & chain wheels, chains, cables & coats and other parts and ...