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 Focused Sunlight Burns Everything Photoshop-Like Interior Light Control Outdoor Gym Turns People Power Into Electricity Invisibility Cloak for Military Vehicles – Thermal Camouflage Airless Mountain Bike Tires Laser Insect Repellent