The socket spanner bit with twelve-square drive and square socket from BGS is a high-quality tool designed for a wide range of applications in mechanics and trades. With a connection dimension of 12.5 mm (1/2 inch) and a spanner width of 30 mm, this socket offers a precise fit and reliable power transmission. Made from robust chrome vanadium steel, it ensures durability and resistance to wear and tear. The matt, chrome-plated surface not only provides an attractive appearance, but also protects against corrosion. The knurling on the insert enables improved handling and a secure grip, making it easier to use. Ideal for professional mechanics and DIY enthusiasts who value quality and functionality. Made from chrome vanadium steel for high durability. Matt, chrome-plated surface for corrosion protection. Knurling for improved grip and handling.