The official Joy-Con 2 Wheel Set includes light blue and red controller attachments that match the the color schemes of each Joy-Con. Beyond looking cool, the promotional images make it appear like the wheels have rubberized and/or textured grips. They look nicer than the regular plastic wheels that have been around since the Nintendo Wii era.
You simply slide your controllers into the center slots, and you’re ready to race with motion controls. The wheels are entirely optional, as you can play with tilt controls without any attachment, but these accessories do add a bit of realism and are comfier to hold than the tiny Joy-Cons. They are also great for local multiplayer parties and for youngsters.
If you want to save a few bucks, you can preorder a GameStop-branded Joy-Con 2 wheel set for $17. The official Nintendo Wheel Set looks much nicer, though.