Flywheel Diameter 3 and 2. The item "PM Research #5 Bronze Coke Bottle Steam Engine Kit- Extremely Rare" is in sale since Sunday, June 24, 2018. This item is in the category "Toys & Hobbies\Models & Kits\Tools, Supplies & Engines". The seller is "perthou123" and is located in Kent, Washington. This item can be shipped to United States.