The MANTARAY Polisher Pump-Out Vacuum Attachment is used with the MantaRay Water-Powered Polisher/Rougher Standup Vacuum System in polishing mode and allows the MantaRay Water-Powered Handheld Unit to the used indoors. The Polisher Pump-Out Vacuum Attachment has an adjustable airflow control door to control the amount of airflow while in use.