– Brake holder features M5, M6 & passthrough holes for attaching all disc brake mounting styles as well as most rim brake caliper styles – 1-1/8″ steerer tube features star nut for retaining top cap and spacers – 2″ flared cone for compatibility with tapered steerer tubes – Compatible with 1-1/8″ threadless stems only—not compatible with threaded headset/quill stem setups
