The Vintage Tru-Test Tools 13/16″ 6 Point Spark Plug Socket Model T1727 is a high-quality hand tool designed for automotive use. This single item socket features a standard 6 point design with a 1/2 inch drive size, making it compatible with a variety of vehicles. The SAE system of measurement ensures accuracy and reliability when working with spark plugs. With the Proto Tru-test brand backing it, this socket is a durable and reliable addition to any mechanic’s tool collection. Shipped from a smoke-free home. Please ask any questions in advance. I combine shipping whenever possible to save you money. Thank you for your interest!