The Mac Tools AG14AH 1/4" Angle Head Air Die Grinder is a high-quality straight die grinder designed for precision grinding tasks. Made by MAC, a trusted brand in the industry, this single item unit features a 1/4 inch collet size and a maximum speed of 25,000 RPM. With a locking throttle feature, this air grinder offers advanced control and safety for the user. Manufactured in the United States, this durable tool is essential for automotive and maintenance applications.