Release built up fork air pressure with the push of a button Valves allow forks to work at peak performance without the use of any tools O-ring under cap creates a positive seal to keep dirt, mud, and water out Replaces OE fork bleeder screws on Showa, Kayaba, and WP Orange valves fit upside down WP forks Red, Blue, and Stealth valves fit Showa and Kayaba Measure 10.5mm high installed Installation tool included Blue 3805-0018 (SHOWA & KAYABA FORKS) Red 3805-0030 (SHOWA & KAYABA FORKS) Stealth 3805-0031 (SHOWA & KAYABA FORKS) WP Orange 0404-0032 (WP FORKS) Made in the USA