Chicago Pneumatic CP9108Q-B Heavy Duty Angle Die Grinder - Pneumatic Grinder with Inbuilt Air Regulator. Power Tools Heavy-Duty Angle Grinder: Grinder tool can work with a variable speed of up to 23,000 RPM. Pneumatic grinder features a molded rubber grip to provide extra comfort to the operator. Innovative Design: 120 Degree Angle Die Grinder includes 1/4-in. and 6 mm collets along with a lock off throttle. Power tool comes with a rear exhaust that directs the air away from workplace. Quiet and Powerful Tool: Hand tool features a swivel air inlet for smooth operations and a variable top speed regulator for better control. Air-powered tool does not produce much noise while working. Angle die grinder is equipped with 0.32 HP (240W) motor. Compact and Portable: Pneumatic tool is specially designed for general maintenance applications and is well-suited for confined, unreachable places. Power grinder is designed to be lightweight for easy handling. Specifications: Air angle grinder measures 9.5 x 1.9 x 5.7 in. and is an ideal tool for limited space applications.