The Cornwell Tools CAT520 Deluxe Full Size Rear Exhaust Straight Die Grinder is a high-quality air tool designed for precision grinding tasks. With a palm grip and a 1/4 inch collet size, this straight die grinder offers a maximum speed of 22,000 RPM and a variable speed trigger for added control. This single item set from Cornwell is perfect for automotive applications and ensures reliable performance for a variety of grinding needs.