Specification: Item Type: Pneumatic Grinder Material: Zinc Alloy + Rubber Product Speed: 12000rpm Product Air Inlet: 1/4 Grinding Disc Size: Approx. 12.5x12.5cm / 5x5in Air Consumption: 0.48m³/Min Weight: Approx. 1396g / 49.2oz Scope of Application: Home decoration, handicraft polishing, burr trimming, etc. How to Use: 1. Perform a trial run for at least 30 seconds under no load, and use it after confirming that there is no abnormality 2. The gas pipe must be placed at the back end during operation to prevent accidents 3. Hold the machine firmly with both hands during work, and ensure a stable foothold 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 Grinder 1 x Wrench 1 x Manual 1 x Bag 1 x Suction Pipe Note: 1.Please allow 01 inch error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.