1.9cc Mini 4 Stroke Gas Engine Internal Combustion Model Atkinson Differential Opposed Piston

M14 1.9cc Mini 4 Stroke Gas Engine  Internal Combustion Engine Model Atkinson Differential Opposed Piston   Features:Miniature: This is a mini internal combustion engine model based on the principle of Atkinson cycle differential engine. In an air-cooled structure, it is carefully crafted from brass and stainless steel