Shimano tiagra front hub rim brake quick release. With high quality bearings, a durable finish, and shimano´s iconic internal cam quick release, the rs400 is ready for action.Specifications:- Brake type: Rim brake- O.L.D. (mm): 100- Spoke hole 28H: Yes- Spoke hole 32H: Yes- Spoke hole 36H: Yes- Axle fixing method: Quick release- Quick release skewer length (mm) 133: Yes- Flange distance (mm): 71.6- Offset (mm): 0- P.C.D. left / right (mm): 38- Flange diameter (mm): 48.4- Seal: Contact- Internal grease sleeve: Yes- Radial lacing: Yes