Middleburn RS7 Uno has been tried and tested for many years by thousands of single speed riders.
More recently the Uno rings have been used on downhill and enduro bikes as a light reliable system as it replaces the spider, ring and bolts with just the Uno.
Uno rings are also used on tandems as the crossover rings.
Spider/Ring have been CNC machined from a billet 7075T6 one of the strongest alloys available today for unsurpassed durability and maximum strength. The Uno is super light as the spider and ring are all in one.