Pro-Track N250 Aluminum rear tires for 1/8" axle. They are .850 in diameter and .800 wide. It is Pro-Track's "Natural European Rubber" compound mounted on the TQ (5 slot) 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.