Disc Speedhub 500/1414 Speed Internal gear hub with Hollow Quick release type axle.135mm spaced.Boxed kit includes cables, Torque arm, shifter and Chain Tensioner.Special 4 bolt Disc fitting. (Disc not included... available as Rohloff specific part for most brake systems from Hope Technology Tel: 01282 851200)Â 526% range of gears (equivalent to typical 27Speed MTB derailleur system)14 Individual gears (no wasted overlaps or duplicates)Evenly spaced 13.6% gear increments. (no sudden big jumps) Ability to shift whilst stationary or under load.Super efficient sealed Oil bath mechanism (95-99%)Adjustment and maintenance free over thousands of miles. Gear positions are indexed inside hub, thus negating critical cable tension adjustments.Precision German engineered (in use Worldwide in the hardest of races and regions.)Super reliable, can be used for virtually all disciplines, including Tandem and Downhill.Lightweight - approx 1.7Kg, but replaces a lot of conventional gear components...World class hubs - Read about Mark Beaumonts world record breaking trip around the world using Rohloff.http://www.bikeradar.com/news/article/interview-mark-beaumont-18628Please see more pics button for spoke lengths.36H versions of all the Speedhubs are available to order, please contact our sales desk