Features: 100% brand new and high quality Durable and lightweight aluminium body. Wear resistance and long service life. Lightweight, durable and comfortable to hold and use. Pencil type die air grinder, compact for better control when cutting. Low vibration, can be a long operation. Free speed and has a self closing lever. All kinds of metal precision grinding, Cleaning of various metals, chamfering, grinding, carving, internal processing, Cutting plastic, stone, wood, etc., grinding, polishing various types of welding surface grinding. Package Includes: 1x Pneumatic Engraving Pen 2x Disassembly Wrench 1x Oil Can 1x Quick Connector 1x 3mm Chuck 1x 6mm Chuck Specifications: Material: Alloy Product Dimension: approx. Length: 14.5 cm/ 5.7 inches approx. Diameter: 2 cm/ 0.79 inches Net Weight: 500g/ 1.10 lbs Air Inlet Size: 1/4 inch Material: Alloy Type: High-speed Pneumatic Grinder Suggested Inner Diameter of Trachea: 5 mm No-load Speed: 35000rmp Inner diameter of air duct: 3/8-inch Rear exhaust: 20mm note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.