The Matco Tools Pneumatic Straight Air Die Grinder MT3980M 229868 is a high-quality tool designed for automotive use. This palm grip grinder features a 1/4 inch collet size and air inlet size, with a maximum speed of 18000 RPM. The variable speed trigger allows for precise control, while the air hose fitting accessory ensures a secure connection for optimal performance. This single item tool from Matco Tools is a reliable choice for automotive professionals looking for a durable and efficient air grinder.