"With Flow Adjustment Knob-- Control the airflow by turning the flow adjustment knob located above the handle.Higher Flow Nozzle / Air Output Flow: 850L/min (Operating Pressure: 90PSI)-- The higher flow nozzle for particularly deep and dirty areas and large scale applications.Powerful Air Blow Gun with 140 Max PSI-- Blasts dust, stubborn debris, water, and more out of all kinds of materials, machinery, and engine compartments, etc.2-Way 1/4-inch Air Inlet-- Connect air hose from top or bottom to suit your needs. A 1/4 inch male quick coupler is included.Ergonomically designed and manufactured with heavy-duty components and a strong, attractive aluminum frame for long life, and is fitted with an ergonomically contoured soft grip handle."ZF Notice:1. The monitors used are different, the computers are different, and the camera angles are different, there may be problems with the angle and color.2. Purely manual measurement, there may be 0-1cm error.