The bit insert set from BGS is a versatile tool set that has been specially developed for applications with hexagon socket bits. With a drive of 12.5 mm (1/2"), this set offers a wide range of bit sizes, ranging from 7/32" to 13/16". The inserts are available in two lengths: 55 mm and 70 mm, which allows for flexible handling in different situations. The knurling ensures a secure grip and makes it easier to change bits. Made from high quality chrome vanadium steel, the bits are both durable and resistant to wear and tear. This set is ideal for professional craftsmen as well as DIY enthusiasts who value quality and versatility. Made from chrome vanadium steel for high durability. Wide range of hexagon socket sizes from 7/32" to 13/16". Two different lengths of inserts: 55 mm and 70 mm. Knurling for better grip and easy handling. Chrome-plated surface for additional protection against corrosion.