Features:High quality alloy and steel material, reliable and durable in use.Compact size, light weight, convenient to operate in small space.Easy to remove, quick change chuck for easy buffing wheel change.Good mechanical performance, a perfect tool for polishing and grinding.Suitable for grinding, trimming and engraving the surface of metal parts, wood components, rubber tires and castings, etc. Specification:Condition: 100 percent Brand NewMaterial: Alloy, SteelColor: As Picture Shown Chuck Size: 3mm or 6mmFree Speed: 25000rpmWorking Pressure: 6-8kgAir Consumption: 170L or MIN 4cfmAir Inlet Size: 1 or 4inchTube Inter Diameter: 3 or 8inchSize: As Picture Shown Length: Short, Medium, Long(Optional)Package Weight: Approx. 630-790g or 22.2-27.8ozPackage list: 1 x Pneumatic Grinder1 x Chuck1 x Inlet Interface2 x WrenchNote:1. Always use a water separator and drain regularly to ensure that the movement is dry.2. The daily probation period must be drop 2-3 drops of lubricating oil in the air inlet of the gun body and idling for half a minute.