This is a pair of Replacement Tires and Wheels for the Tamiya Terra Crusher.  We use the on our ATR Robot Kits.  You can also buy them with an output shaft if you wish, see our ATR kits for details.

Usually tires like this are two parts and you end up buying the Rims and the Tires for a lot more than these cost already assembled.  These are one-piece 5-spoke chrome plated plastic wheels. Offset V-tread rubber tires. Tires are pre-mounted and glued to wheels.

The tires are 6.75" (170mm) in diameter and 3.75" (96mm) in width. The wheel's inner hub have a 14mm hex drive.   The wheels are off-set 50.2mm from the inside edge of the rim to outside edge of the drive washer.