Place twice the power of a standard shop vacuum in the palm of your hand. Powered by standard shop compressed air, the lightweight 1548 Flexible GunVac® has no electric motor to burn out. Easy to empty high filtration collection bag attaches to rear of vacuum via hose cuff. Unit hangs on a hook, ready for use at anytime. Threaded vacuum inlet accepts 18" x 1 5/16" OD flexible metal extension (included).