Bosch GBL82-270 Air Blower is handy tool for blowing and dust extraction. Variable speed dial wheel for easy flow speed adjustment. 820W motor gives powerful airflow of 4.5m³/min for speedy cleaning. Specialized Nozzles: 1. 50mm nozzle for general applications 2. Drill hole cleaning nozzle and dust collection tube for drilling cleaning. 3. Extension nozzle for far reached/narrow applications.