This vintage S-K 40900 5/16" 8 point double square shallow socket with a 1/4" drive is a must-have for any mechanic or tool collector. Made in the USA, this SK socket is built to withstand the toughest jobs and is perfect for anyone who values quality tools.

With its unique double square design, this socket is versatile and can be used in a variety of applications. The brand SK is well-known for its high-quality tools and this socket is no exception. Whether you're a professional mechanic or just need a reliable tool for occasional use, this vintage S-K 40900 socket is a great addition to your collection.