Chainless bicycle design I have seen these before but this one is really well made. Facebook Prev Article Next Article Inventions Checkout these cool gadgets... Related Posts Revisiting the Microalgae Lamp which Absorbs CO2 Bar Urinal Can Tell If You are Drunk Is Artificial Intelligence Just Around The Corner? How Water Bottles Create Cheap Lighting in Philippines Dancefloor Generating Energy To Power The Night Club The Water Fountain Toothbrush