The STEELMAN 1562A Mini 1/4-Inch Angle Die Grinder is the ideal and compact tool for auto repair work, weld prep, rust removal, polishing, and more. With a maximum free run speed of 18,000 RPM this pneumatic tool uses a 1/4-inch collet to accept a wide range of heads to will help you get the job done right and done fast. When not in use a safety trigger lock on the lever style tease-trigger prevents against accidental startups yet won't impair easy use. The built-in regulator allows for variable speed control through the trigger and operates on a mere 4 cubic feet per minute of 90 PSI compressed air. Threaded to accept a conventional 1/4-inch NPT air inlet to connect it to a 3/8-inch air hose this tool is compact at only 6 3/4-inches long and weighing 1.70lb.