Air powered Rotopeen Tool comes with C flap hub assembly and includes hub and 12 C flaps. Can also be used with cutter hub assembly part # 805035 or 80 grit flap wheel part # 572052 which can be ordered separately. The Rotopeen housing is made of cast aluminum that is machined to hold brushes and rollers. Vacuum Shroud conforms to a surface and safely contains hazardous dust and debris as it quickly removes coatings, as well as Lead paint, Asbestos, Mold, rust and slag. Meets or exceeds OSHA and EPA standards for the safe containment of hazardous materials being removed. It has a powerful 1 HP Air Motor and requires 14 CFM of air at 90 PSI for the aggressive profiling and surface preparation of various surfaces, including Steel, Concrete and Wood. Attaches to any vacuum with 1 1/2 inch coupling or hose.