General description Sealey AK7986 Premier Black Hex Key Socket Bit Set is designed for professional use, featuring a comprehensive range of tools suitable for daily tasks. This 9-piece set includes various sizes of hex key socket bits, ensuring versatility and efficiency in your projects. Technical specifications Material: Professional heat treated Chrome Vanadium steel Hex bit material: S2 Steel with phosphate finish Sizes included: 4, 5, 6, 7, 8, 9, 10, 11, 12mm Model No.: AK7986 Compatibility and accessories Supplied on a socket rail for easy organization and access Usage Knurled rings provide extra grip, especially useful when working with oily fingers Other information Lifetime guarantee*