Nice multipurpose wheel measures 4-7/8" dia x 1-1/4" with a gray plastic wheel and a hard rubber tire with straight-line treads. The 7/8” dia hub is flush on one side, and protrudes 3/8" long on the other (inside) with a 3/8” bore all the way through.

Would be yellow, no? Yes, but you could put these nifty white plastic wheels on anything you like. You've seen lawnmower wheels? That's what these are like. Measure 6" dia x 1-7/16" thick with hard black rubber treads, a 1/2" axle bore and a 13/16" x 1/4" hub on the opposite side.

If these were full-size, car guys would put them on restored ’57 Bel Airs and low riders. These 6” dia solid rubber wheels are gray with (5) treads on 1-7/8” wide tires. Mounted on a 4” dia aluminum rim with dual 9/16” ID bearings with a loose bushing between them. One side has a nearly 1-3/4” dia hub that protrudes approx 3/16”; the other bearing is recessed by 3/8”.

For your riding comfort, this 9-5/8" dia x 3" wide pneumatic tire has a plastic hub, rubber treads and a 25psi inner tube. Has a 1/2” ID with a 1-1/4” dia x 15/16” axle hub on the inside face and a standard Schrader air valve on the outer. Great for DIY large wagons, or to replace those little hand truck tires.