Feature: 1. Pencil Appearance: This pneumatic die grinder features a pencil style that provides control and maneuverability when grinding and polishing surfaces. 2. One Hand Operating: This pneumatic pencil die grinder is small, lightweight and pen shaped for easy one handed use, bringing more convenience to your work. 3. Efficiency Enhancement: Our pneumatic pencil grinder set as a whole is easy to carry around and with a no load speed of 39,000RPM, it can effectively enhance your efficiency. 4. Nylon and Zinc Alloy Material: The pneumatic pencil grinder set is made of zinc alloy and nylon material with excellent craftsmanship, wear and corrosion resistance, stable performance, and not easy to rust. 5. Application Scenarios: This grinder can be for chamfering, grinding, engraving, and internal machining of various metals. Can also be to grind and polish plastic, stone, wood, etc. Specification: Item Type: Pneumatic Pencil Die Grinder Material: Nylon, zinc alloy No Load Speed: 39000RPM Round Trip Stroke: 0.7mm Air Consumption: 0.08m³/min . Package List: 1 x Pneumatic Grinding Pen1 x Sponge Cover1 x Hex Wrench1 x Joint1 x Flat Collet1 x Tube1 x Collet1 x Storage Box Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.