Features: Brand new and high quality Experience the power of engineering with this single cylinder B-type Roquois Sterling engine kit - a must-have for any mechanical enthusiast! Crafted from high-quality metal, this kit boasts exceptional durability and precision engineering that ensures smooth operation. Designed for those who have a passion for mechanics and engineering, this kit is perfect for both beginners and professionals alike. Whether you're looking to add to your collection or simply want to experience the thrill of building your own engine, this kit is perfect for workshops, classrooms, and home use. With its intricate design and realistic operation, this Roquois Sterling engine kit is sure to impress and inspire anyone with an interest in mechanics or engineering. Specifications: Item name : Engine Model Materials : Metal Package Includes: 1 x Hot Air Stirling Engine Model note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!