Kavan Super Light Scale Air Wheel Treaded 125mm 2 Pcs KAV0260

Scale AirWheels are designed to safely absorb the shock
associated with landing large or heavy model airplanes.

Available in two styles, Scale Treaded AirWheels sport a
modern appearance with longitudinally grooved tires.

Scale Balloon AirWheels give a more vintage appearance
with smooth tires.

If desired, the two-piece hub allows for hidden installation
of the wheel collars. Tires inflate using a bicycle pump
to a maximum of 1 bar (14 psi). Both include high quality
Delrin adapters for 3/16 axles (can easily be drilled to 5
mm) and Delrin adapters for 6 mm axles (can easily be
drilled to 1/4").

For the rare occasion that ball bearings are needed, Scale
AirWheels are available with ball bearings for 6 mm axles
(adds 5 g to the weight)."