The MAC Tools Used Model AR251 1/4" Drive Flat Head Air Ratchet is a high-quality automotive tool manufactured in Japan. This air ratchet features a 3/8 inch air inlet size and a 1/4 inch drive size, providing a compact and efficient design for various automotive maintenance and repair tasks. With the trusted Mac Tools brand and durable construction, this air ratchet is a reliable tool for professionals and DIY enthusiasts alike.