Specification: Item Type: Pneumatic Grinder Material: Zinc Alloy Color: As shown in the picture Weight: Approx.877g/30.9oz Product Speed: 22000rpm Product Chuck Size: Approx.3mm / 0.12in, 6mm / 0.24in Air Inlet: 1/4 Air Consumption: 0.2m3/min Application: Home decoration, handicraft polishing, rough edge trimming, etc. How to Use 1. Carry out a trial run for at least 30 seconds under no load, and use it after confirming that there is no abnormality. 2. During operation, the gas pipe must be placed at the back end to pre-vent accidents. 3. Hold the machine with both hands during work and ensure a stable footing. 4. If the gas stops suddenly during work, the switch must be set to the off state immediately. 5. During the grinding and polishing process, apply even force, and it is strictly forbidden to apply too much force or hit the object. Package List: 1 x Pneumatic Grinder 2 x Chuck 1 x Air Connection 2 x Wrench 1 x Instruction Manual