Rugged Radios Ultra Flex Expandable Helmet Air Pumper Hose The Rugged Radios Ultra Flex Expandable Helmet Air Pumper Hose is designed for riders seeking a balance of performance and durability. It features an expandable design, stretching from 1 to 3 feet or 2 to 6 feet, with flexible memory that ensures it easily returns to its original shape. The hose has secure cufflink ends with internal ribs or threading to prevent disconnection and is fully compatible with MagLock. Boasting a 1.25 inch inside diameter, it ensures steady airflow and is compatible with popular helmet air pumper systems like Mac, MAC X, MAC XC, and Parker Pumper. Features: Expandable design stretches from 1 to 3 feet or 2 to 6 feet This is the same hose included with our MAC Air and Mac-1X Bundles Lightweight construction minimizes helmet strain during use Flexible memory shape manually collapses back after use Secure cufflink ends with internal ribs or threading to prevent disconnection MagLock compatible with updated threaded ends 1.25 inside diameter for consistent airflow performance Compatibility: Mac, Mac-X, Mac-Xc, Parker Pumper, and other popular helmet air pumper systems Cuff ends support both standard air intake and threaded MagLock Helmet Air Kit Sold each