PFCKE Low Temperature Stirling Engine Classroom Teaching Aids Stirling Engine Kit Steam Heat Educational Model Adult Desktop Educational Toy Brass Aluminum Stirling Engine-HZZ92 Professional Silver

Easy to operate - Place the engine over freshly made tea, coffee or boiling water, wait 20 seconds, gently spin the flywheel, and it will run slowly and smoothly for about 30 minutes If you have any questions about our products, please contact us first, our support team will try our best to help you solve all problems.