1. Our this item is used to blow dust and must be only worked with an air compressor. 2. It is designed with two colors, also ergonomically designed with grip which provides easy operation. 3. It is provided with two nozzles. The flow can be adjusted for the short nozzle. The length of the long nozzle is 110mm. 4. It is made of fiber reinforced plastics. 5. Max. operating pressure: 145 psi (10kg/cm2) 6. Air inlet: 1/4"