Product information:

These wheels are extra-lightweight. The air-filled tyres have a shock-absorbing effect but keep their shape well. The surface of the tyres and wheels is high-gloss, dirt-resistant and fuelproof (even against two-stroke petrol/oil mixture). The grooved tread helps keep the aircraft tracking straight on take-off and landing. The tyres and wheels are of semi-scale design.

All the dimensions (bore and diameter)are given in the title.