MAC-XC Magnetic Quick-Release for Helmet Air Pumper uses potent Scosche magnets for rapid connection/disconnection of your pumper hose to a coupler base attached to your roll bar. This kit includes a magnetic helmet coupler and an extendable 12-36in pumper hose. With the Magnetic Hose Coupler and the added expandable hose, connection to the Coupler Base is hassle-free. This easy break away equipment has a strong magnetic connection and is designed for quick connect/disconnect. Whip Mount and Bar Mount also come with the kit but not when purchasing the MAC-XC alone. The UTV Bar Mount Tube Size Reference Guide covers an extensive range of car models.