12" is the overall size including tyre, the tyre is about 1 1 /4" thick. 12" Rear White 300mm Mag Wheel With (PU) Solid Tyres For 12" Childrens Bikes. You are buying a Rear 12" plastic 5 spoke mag wheel, with bearing bike type spindles.
This product would be ideal for parents looking to purchase a bike or scooter for their young children.
