Description Specification Product Name Stirling Engine ModelProduct Material MetalProduct Length 160mmProduct Width 87mmProduct Height 100mmProduct Weight 450gNote 1 With alcohol lamp without alcohol with heating cylinder 2 The piston turns faster if it is painted with pencil grey 3 The rubber ring should not be stuck too tightly and the cotton core should not touch the glass 4 If the screw is tightened too much the glass will crack and the rotation speed will be affected Feature 1 Rounded corners to prevent irritation2 Alcohol lamp has a cover to prevent volatiles3 Alcohol lamp has large capacity5 Magnetic base to hold alcohol lamp6 Machine is 15mm shorterPackage included 1x Stirling Engine Model