DAVE BROWN Lite flight wheels are the best, maintenance free wheels you can buy for your model. the tires are made from thick, durable foam mounted on sturdy hubs. The injection molded snap-together hubs are durable and have no threads to jam on the axle. The center axle hole may be drilled out slightly larger if needed. Bore is 5/32" (3.97mm).
These wheels come in packs of two.
3 1/2 " Diameter
1.20 oz each, 7/8" wide