Unlike the Multiwheel, Floating Wheels do not require Bearings. The Floating Wheel is pushed directly onto a Tube, for example a 15 cm Tube, and then secured with a Hub Cap. You can also place a Floating Wheel on a longer Tube. For example, two Floating Wheels fit side by side on a 35 cm Tube. You can find the parts here: Floating Wheel and Hub Cap.
