The MAC Tools 8 pc Inverted Torx Impact Sockets set includes both 1/4″ and 3/8″ drive sizes, with a total of 8 pieces ranging from E4 to E16 sizes. Made in the United States, these sockets are designed for impact use and feature a single item set. The product does not come with a quick release feature and has no warranty associated with it. Ideal for automotive maintenance and repair, these high-quality Mac Tools sockets provide a reliable and durable option for professional mechanics or DIY enthusiasts.