The MATCO 3/8" DRIVE MT2138 IMPACT WRENCH is a powerful tool designed for automotive use. With a maximum torque of 375 ft/lbs, this single item set includes an air hose fitting and has a 3/8" drive size. The impact wrench is manufactured by MATCO and has an air inlet size of 1/4", making it a reliable and efficient tool for tightening and loosening nuts and bolts with ease.