Chi-Ha Tank. Each model features AMAZINGLY detailed laser etching and averages 8-12 pieces laser cut onto a 4" square sheet of thin metal. Makes an excellent gift for tween boys and men of all ages with average assembly time only 30 - 45 minutes!. Was built by Mitsubishi and designated the CHI-HA. It used the Mitsubishi air-cooled 170 horsepower diesel engine and was regarded as the best tank that Japan had produced during World War II. The main armament consisted of a single 57mm gun mounted in the turret and supported by two 7.7mm self-defense machine guns.