Note: for this one motor, the 12 inch size is the motor with tyre size. Not the tyre, this one hub only is not have 12 inch. Hope you can check the size before you order it.The controller is have bluetooth function, if you not need it, just don't care that. If you need the LCD display, please connect me. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components". The seller is "annoybike" and is located in this country: CN. This item can be shipped worldwide.