Designed for virtually any project, a die grinder is the ultimate tool for grinding, buffing, sanding, polishing, and honing metal and other materials. The Jet 1/4-Inch Collet Pneumatic Die Grinder Tool is built for the power, comfort, and durability you need for any project. This pneumatic die grinder hand tool features a standard, 1/4-inch Erickson collet , making it compatible with a variety of accessories and attachments (attachments sold separately). Designed for use anywhere in the shop and in industrial environments, this rotary tool sports an impact-resistant composite housing, and a heavy-duty, 1-horsepower motor. Get the ease and control you need for any project. This air-powered die grinder connects to your compressed air tank with any 3/8-inch (or larger) air hose. The 360-degree rotating air inlet keeps your air hose tangle-free for added safety and ease-of-movement. This compressed air tool also uses a built-in regulator that gives you precise speed control. The variable-speed throttle ramps up to a maximum 20,000 RPM at 90 PSI. The straight angle grinder also features a safety throttle lock to prevent accidental engagement. Enjoy smooth operation thanks to the die grinder's sealed ball bearing design that keeps out contaminants.