For use on WP AER48 inverted forks with one each M4 x 0.7 and M8 x 1.0 air bleed screws in the fork capsNew ultra-compact, low profile design is only 11 mm high installedStainless steel body is stronger and will not corrodeEasy to install, simply replace the OEM bleeder screw with the Micro BleederReduces harshness caused by air build-upAllows bleeding of air pressure without toolsOne of the easiest bolt-on upgrades you can make to your forksKit includes two bleeder valvesPrecisely engineered to ensure ultimate efficiencyManufactured using innovative technologiesAbsolute quality, great durability, and solid workmanship M4 x 0.7 mm and M8 x 1.0 mm Micro Bleeder by Motion Pro®. WP AER48 Inverted Forks Bleeder. Ultra-compact, low-profile design for use on WP AER48 inverted forks that allows bleeding of air pressure without tools. Kit includes one each M4 x 0.7 and M8 x 1.0 air bleed screws. Easy to install, simply replaces the O.E.M. bleeder screw.