Streamliner Disc DLXFeet mount to a standard quick release skewer* (not included) or to traditional eyelets. Extra long (280mm), adjustable Versalock arms (for frames with eyelets). Center bracket can be attached to a brake caliper or fender bridge Features: Exceptional torsional stiffness. Not just for disc brake equipped bikes. Suitable for use with all frame materials, including carbon fibre. Attaches to a standard quick release skewer or to traditional dropout