Authentic Museum Quality Laser Cut Replica Models These amazingly detailed and precision laser cut models come as 4\" square Steel Sheets. Once built they present as amazing 3D museum quality models. Easy to follow instructions. Finished size: 185 x 93 x 47mm Recommended for ages 14 years and up. A Little History of the Chinook: The Metal Earth CH-47 Chinook models are amazingly detailed etched models that are fun and satisfying to assemble. Each model is made from a pair of completely flat laser-etched steel sheets. This American tandem rotor, heavy-lift helicopter was first used during the Vietnam War. Powered by two 4,733 horsepower turbo-shaft engines, it has a top speed of 196 mph which made it faster than any other utility and attack helicopter at that time. It remains in production and frontline service, with over 1,200 built to date. Why not display your model on the new Metal Earth White LED base (sold seperately) The white light reflects off the metallic surface of the model and looks stunning ! Alternatively, the Solar powered Spinner Turn Table Display Stand (sold seperately) uses power from the sun to gently turn, showing off your model from every angle.