Features: 1. Made of aluminum alloy, wear-resistant and durable to use. 2. Convenient one-handed operation with safety trigger for the safe start-up. 3. Equipped with different fittings can use for different tasks like grinding, graving, polishing, solder joint removal, trimming and edge deburring. 4. Handle type: 90 degree bending. No-load speed: 20000RPM. Air Inlet: 1/4BSP. Air consumption: 4CFM. Air pressure: 90PSI. 5. Applicable to all kinds of molds (like shoe molds, tire molds, plastic shell switch molds, household appliances molds, etc.), hardware products (like faucets, zippers, hardware tools and various sets of equipment box, etc.) Warning: 1. Do not touches the bit or collets while using it, or it may cause injuries 2. You can wear protective equipment to keep dust out of your eyes 3. Store the tool in a dry place and keep out of the reach of children Specification: Type: Pneumatic Grinding Machine Material: aluminum alloy Surface treatment: polished chromes Handle type: 90 degree bending No-load speed: 20000RPM Air Inlet: 1/4BSP Chuck size: 3mm and 6mm Air consumption: 4CFM Air pressure: 90PSI Package Contents: 1 x Pneumatic Grinding Machine, 1 x 3mm Chuck, 1 x Bayonet Quick Connector, 2 x Disassembly Wrench includes: 1 x Pneumatic Grinding Machine 1 x 3mm Chuck 1 x Bayonet Quick Connector 2 x Disassembly Wrench