The Exair Soft Grip Back Blow Safety Air Gun uses a small back blow nozzle to deliver a blast of air to blow debris and liquids from inside small pipe or hose diameters, channels, bores, holes, internal threads, and more. The ergonomic design helps keep the operator's hand in a comfortable position so the air gun can be used for hours of continuous use without fatigue. An array of holes on the Model 1004SS M4 Back Blow Air Nozzle provides a forceful back-facing 360-degree airflow to clear out coolant, chips, more.