The Craftsman 1/2 Inch Impact Wrench is a durable and reliable tool designed for automotive use. With a drive size of 1/2 inch, this impact wrench is perfect for loosening and tightening nuts and bolts with ease. The set includes a 3/8 inch ratchet wrench and an air hammer, making it versatile for various tasks. The air inlet size of 1/4 inch ensures efficient airflow for optimal performance. Additionally, the manufacturer part number 16852 guarantees the authenticity and quality of this single item set from Craftsman. Never been used, just been in storage for awhile.