This 7 piece set offers a useful assortment of SAE universal joint sockets that are strong as well as beautiful. These sockets offer more than just a stylish exterior though. They feature a universal joint to make reaching and turning fasteners in tight spaces much easier Inside Powerbuilt sockets you'll find precision chamfered hex faces that make it easier to guide them onto fasteners. The exclusive Z-Drive 6 point hex pattern grabs and turns the flat surfaces of those fasteners to reduce round-off and slipping. Dependable Powerbuilt sockets meet or exceed ANSI standards and have a lifetime warranty, all at affordable prices.