Novatec, generally known among mountain bikers for producing reliable if unspectacular OEM hubs badged for other companies, have a small stand at Eurobike showing their own wheelsets. The wheelsets run on Novatec branded hubs, with a variety of axle adapters you can swap without any tools. The hubs in these wheels aren’t available separately.
The wheelsets range from an 18mm internal width rim to the 25.8mm internal width Demon, aimed at downhill riders. All sets are available as 27.5 and 29, except the Demon which is 26 or 27.5.