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 Gun Vac 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).