Set contains one each super detailed, 3D printed NS-37 37mm cannon barrel and an NS-45 45mm cannon barrel with muzzle brake. Also included is a hollowed out barrel for the cowl mounted machine gun. Designed specifically for the 1/32 ICM Yak-9T and Yak-9K kits. A simple upgrade that adds a lot of cool detail where it counts. Designed by Mike Swinburne.