Park Tool DF-1 Dummy Fork The Park Tool DF-1 Dummy Fork is an essential for any scenario that requires dropping the fork from a bicycle, enabling complete removal of the fork while keeping the handlebars, headset spacers, and brake caliper organized. The DF-1 installs into the headset and is held in place using the bike's stem. The brake holder features threaded and unthreaded holes for attaching disc brake calipers as well as most rim brake calipers, while the included pad spacer protects hydraulic disc brakes from accidental engagement. The DF-1 is nickel plated and powder coated for long life. Features Brake holder features M5, M6 & passthrough holes for attaching all disc brake mounting styles as well as most rim brake caliper styles1-1/8" steerer tube features star nut for retaining top cap and spacers2" flared cone for compatibility with tapered steerer tubes Manufacturer's Part No: DF-1 | Park Tool | Df-1 Dummy Fork Df-1, For 1-1/8 Threadless Stems Only