MAC-1X 1-Person High Output Helmet Air Pumper has a single potent motor nested within a washable dry media filter, reducing the size. It mounts with exclusive half clamp bar mounts, available in various tubing sizes, and air speed regulation can be done by an optional Variable Speed Controller. The air pumper's key features include a single helmet outlet, weighing just 1.65 pounds, size of 6inT x 4.5inW x 4.5inD, low current draw, 6061 billet alloy construction, Outerwear particulate pre-filter wrap, high duty cycle life motor, waterproof power connector, wiring harness, and a 12' power cord. Attachments such as Dual bar mounts are sold separately.