Size: 20 inch 

color classification: "the single speed" blue top with "white" "single speed top with single speed top" powder "" green "single speed top speed single top" yellow "single speed top with Bianchi" top "Rainbow" single speed gear top with "blue" transmission top with "white" "powder" top gear gear top with "green" "yellow" top gear transmission "Bianchi" top gear "Rainbow" top gear "" luxury "luxury blue shift" white powder "luxury" gear transmission "green" transmission "luxury luxury" luxury "Bianchi Huang transmission" luxury "single speed transmission rainbow top with random color (long-term stock, bump)

number: eg7-21 ,

frame material: high carbon ,

steel brake: front V brake rear axle brake weight: 14kg gross weight: 15kg weight: 150kg length: 1.33m time: 8 seconds driver pedal height: 120cm-180cm Type: ordinary foot volume: 0.1m^3 wheel size: 20 inches (long distance riding)