Mini Hot Air Model $38.99 View Product Categories: Hobby, Stirlingkit Description Description Mini Hot Air Stirling Engine Motor Model Educational Toy Kits Electricity Related products Hobby, StirlingkitSingle Cylinder Model Kit External Combustion Engine $32.99 Hobby, StirlingkitHoyer Motor High Speed Brushless Hall Electric Machine Engine Model Kit $139.99 Hobby, StirlingkitHigh Speed Hoyer Electric Motor Engine Model Kit $53.99 Hobby, StirlingkitMetal Engine Model Kit Quartz Hot Cylinder Engine Motor $56.99