RETROL
HM-01 Hit and Miss Gas Engine Model Kit

Experience the mesmerizing charm of our hit and miss engine model, featuring innovative elements such as a transparent adjustable flow main oil cup, echo exhaust pipe, and unique “fast and slow engine switching gear.” Crafted with precision using stainless steel 304 components and a high-carbon steel-hardened one-piece crankshaft, this model is a powerhouse of both design and functionality, providing enthusiasts with a captivating and educational experience.