Tektro Io Mech Disc Brake Front or Rear 160mm rotor Brake Lever Actuation: Long PullBrake Usage F/R: Front,RearCaliper Type: 51mm I.SDisc Mount Type: 51mm I.S. Rear,51mm I.S. Front,74mm Post MountHub/Brake Compatibility: 6-Bolt DiscHydraulic Hose Length: Not IncludedRotor Size: 160mmWeight: 197g