Extensive Set of Tools: This kit features 10 SAE deep sockets and 10 SAE shallow sockets in sizes: 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 7/16″, 1/2″, and 9/16″. Durable CR-MO Alloy Steel Construction: This 1/4″ impact socket set is made from high-quality impact-grade alloy steel, ensuring excellent durability and resistance to impact forces.