This listing is for a pair (2 wheels) of 4" Aluminum Hub Wheels.
These wheels are light and the machining is excellent. These feature straight tread rubber tires.
The inner hub hole is nylon and can be drilled out to accommodate various axle shafts.
They are much better alternatives than plastic hub wheels!
USE THREAD LOCKING COMPOUND ON BOLTS/NUTS FOR GAS ENGINE OR LARGER AIRPLANES.