Hadley 135mm SingleSpeed Bolt-on Rear Disc Hub: Hadley hubs feature adjustable annular contact cartridge bearings, meaning they're dead easy to service and look after yourself. Axle conversion kits mean that you can swap your frame as often as you like without needing new wheels. Simply these are quality components and one of the best hubs you'll find" Light load full contact seals and adjustable preload cartridge bearings. International Standard 6-bolt disc mounting dimensions.
