This is a Paul Breisch model. The flywheels are 4 inches in diameter. The machining work is nice. The engine has not been painted. I have not got much satisfaction with running the engine off of the scale model mixer. I have the engine set up with a model airplane engine mixer and it works well. The item “New Holland 1/2 hp 1/4 scale model hit miss engine” is in sale since Saturday, June 13, 2015. This item is in the category “Business & Industrial\Light Equipment & Tools\Stationary Engines\Engines”. The seller is “juke_juke” and is located in Piedmont, South Carolina. This item can be shipped to United States.