The Pittsburgh 18 mm x 1/2" Deep Impact Socket is a high-quality hand tool designed for automotive use. With a 6-point drive type and black chrome surface finish, this socket is durable and reliable for heavy-duty applications. The lifetime warranty ensures longevity and peace of mind, while the free USA shipping makes it convenient for customers to receive their product quickly. As a single item, this socket is a valuable addition to any automotive tool collection, especially for those who work with metric measurements and require precision and strength in their tools.