The MAC TOOLS 3/8 Impact Wrench is a high-quality automotive tool designed for tightening and loosening nuts and bolts with ease. Manufactured by Mac Tools, a reputable brand known for producing durable and reliable tools, this impact wrench is sure to meet the needs of both professional mechanics and DIY enthusiasts. With a 3/8 inch drive size, it is versatile and compatible with a wide range of applications. The MPF990381 manufacturer part number ensures easy identification and access to this essential tool for any automotive project.