Upgrade your tool kit with the WORKPRO 3-Piece 1/2" Double-Ended Impact Socket Set. This robust set includes three double-sided sockets featuring six of the most commonly used SAE and metric sizes (17mm, 19mm, 21mm, 3/4", 13/16", and 7/8") and a durable 3-inch extension rod, all housed in a convenient blue plastic carrying case for portability and organization. Engineered for maximum durability, these sockets are forged from premium heat-treated Chrome Molybdenum steel (Cr-MO) to endure extreme torque changes and withstand high-torque impacts from any driver. The innovative flip-style design allows for quick and easy size switching, streamlining your workflow. Each socket is laser-etched with clear, permanent size markings for instant identification, saving you valuable time on the job. The included extension rod, equipped with a secure spring-loaded detent ball system, provides easier access to hard-to-reach fasteners and prevents sockets from dropping. This easy-access impact socket set is the perfect companion for a wide range of automotive and repair tasks, including changing tires, performing brake repairs, and other mechanical work.