A simple and classic setup of a 30mm low profile pinned 650c rim laced to a cartridge bearing hub with a sexy new duplex spoke pattern lays the foundation of a great wheel that just keeps on going mile after mile and year after year the garda hubs uses two types of bearings in the rear hub two cartridge bearings complement two high quality cup and cone bearings replaceable ball bearings offer incredible longevity and impressive smoothness while the cartridge bearings offer easy replacement