These are Traxxas factory replacement front dished wheels for the XO-1, sold as a pair. The white finish is dyeable, allowing hobbyists to customize the color to suit their build. They use a 17mm hex hub mounting pattern to match the XO-1 drivetrain. Features: Sold as a pair Dyeable white finish for custom color options 17mm hex hub mounting Front wheel application for the XO-1 7/7/26 cs