Models & Model Kits

Bricksdiytoy RETROL R01 1/12 Scale Engine Model - Butane Powered Water-Cooled Stirling Engine, Functional Closed-Cycle Design, STEM Educational Kit & Vintage Decor for Adults & Tech Enthusiasts 【Functional Butane-Powered Engine】 This 1/12 scale hot air pumping engine operates as a real external combustion Stirling engine, fueled by butane gas (not included). Watch the piston, flywheel, and water-cooling system work together in a... Bricksdiytoy RETROL R01 1/12 Scale Engine Model - Butane Powered Water-Cooled Stirling Engine, Functional Closed-Cycle Design, STEM Educational Kit & Vintage Decor for Adults & Tech Enthusiasts