This Williams Tools 1/2" Drive 9/16" Hex Plug Socket Tool AS-618 USA is a high-quality specialty tool that is perfect for any automotive technician. With its durable construction and reliable performance, this tool is a must-have for anyone working on cars, trucks, or other vehicles. Featuring a standard socket type, SAE measurement system, and a 1/2" drive size, this hex plug socket tool is designed to be a perfect fit for a variety of different projects. So if you are looking for a high-quality hex plug socket tool that is made in the USA and built to last, look no further than the Williams Tools AS-618.