Pro-Track PTN328 Aluminum rear wheels and tires for 1/8" axle. They are .880" in diameter and .800" wide. The tires are Pro-Track's "Natural European Rubber" tire compound mounted on the TQ (5 slot) aluminum rim.
Note: If you are not familiar with Pro-Track tire compounds, "Natural European Rubber" looks/feels like a dense foam.
Package contains one (1) pair of wheels/tires.