MAC-XC Magnetic Quick-Release for Helmet Air Pumper uses powerful Scosche magnets for quick connection/disconnection of the pumper hose to a coupler base mounted to the roll bar. Simple and strong magnetic connection is achieved by attaching the Magnetic Hose Coupler to the included 12in expandable hose connected to the Coupler Base. Key features are easy break away and quick connect/disconnect with fixed hose mount. The kit includes MAC-XC magnetic helmet coupler and 12-36in expandable pumper hose. Whip Mount and Bar Mount are separate purchases. The product fits multiple UTV Bar Mount Tube sizes; Arctic Cat Wildcat 1.75in, Can-Am Commander/Maverick 2in, Kawasaki Teryx Perimeter 1.875in, Polaris ProR, Turbo R, Pro XP Main 'C' Pillar 2in, Yamaha Wolverine RMAX Perimeter Tubing 2in to name a few.