Features 1、Small size and light weight, the pen design make it easy to use with one hand 2、Precision designed blade grinder, safe and durable 3、High-speed rotation can adapt to high-speed precision machining 4、Excellent internal design, coreless vibration and can work for a long-term 5、Easy to use, convenient to load and unload Specification Features: 1. Small size and light weight, the pen design make it easy to use with one hand 2. Precision designed blade grinder, safe and durable 3. High-speed rotation can adapt to high-speed Precision machining 4. Excellent internal design, coreless vibration and can work for a long-term 5. Easy to use, convenient to load and unload 6. Suitable for Precision grinding of various metals, cleaning, chamfering, grinding, engraving, internal processing of various metals, cutting, grinding, grinding of plastics, stone, wood, etc., grinding of various welding surfaces, other complicated surfaces , inner surface, gears, chamfering, etc. Specification: Condition: 100% Brand New No-load speed: 58000rpm Chuck Specifications: 3-6mm Pen Diameter: 16mm Average Air Consumption: 60 L/min Weight: Approx. 781g / 27.5oz Package List: 1 * Pneumatic Die Grinder 1* Silencer Pipe 1* Air Pipe 2* Wrenches 1* Oil Mister 1* Chuck 1* Oil Bottle (without Oil) 1* Intake Interface 10* Grinding Heads Note: New-style and old-style are shipped randomly Package List