Motion Pro Micro Fork Bleeders M4x0.7 Black, with External PreloadNew ultra compact, low profile design is only 11mm high installed. Features: Stainless steel body is stronger and will not corrode. Easy to install, simply replace the OEM bleeder screw with the Micro Bleeder. Reduces harshness caused by air build up. Allows bleeding of air pressure without tools. One of the easiest bolt on upgrades you can make to your forks. Kit includes two bleeder valves.