Sunnytech Mini Hot Air Stirling Engine Motor Model Educational Toy Kits Electricity HA001

Well MadeProduced with high quality material and adopts mirror surface stainless steel for the base brass cylinder premium spring with nickel plating stand and accessories aluminium alloy displacer piston glass cylinder liner precision bearing bearing steel shafts zinc alloy flywheel All the parts have done surface treatment to avoid rusting Long LastingUsing 95 alcohol which test by one customer It did come with two spare hot cylinder glass tubes and two Orings inside the package you can replace it fast and easily and replacement instruction included on the manual Smart SizeIt only measure to 394 X 177 X 197 in and contains pattern of connecting rod piston crankshaft lever belt drive gearing worm drive transmission threaded fastener rolling bearing plain bearing heat transfer sealing techniques etc Amazing ConversationIts funny to see peoples looks and reactions when they squeeze a little shot for this Stirling engine Put some combustibles and get the flywheel going Best GiftIts elegant gift package makes it spruce up and presentable It has a wide range of application as great gift for students science project Physicalmechanical learning teachers Demo props on the class birthday gift for friends families parents.