Description: 【Durability Material】: Hex Socket Bit Set is Crafted from quality chrome vanadium steel, sturdy and durability, long time performance 【Comprehensive Set】: Includes 12 piece hex bit socket set in sizes H5, H6, H7, H8, H10, H12, H14, H16, H17, H18, H19, and H22 to meet a wide range of repair and assembly needs 【Versatile Compatibility】: Features a standard 1/2 inch (12.6mm) square drive head compatible with electric tools, pneumatic wrenches, manual ratchets (including quick release ratchets and L shaped wrenches), making it suitable for various applications 【Precision Design】: Hex Socket Bit Set, Rounded inner corner design increases contact surface between the bit and the screw, making it easier to tighten or open the screw and extending its lifespan 【Convenient Storage】: Comes neatly packed in a compact box 22 cm x 15 cm x 5 cm/8.66 inch x 5.91 inch x 1.97 inch, keeping all sockets organized and easily accessible for both professional mechanics and DIY enthusiasts Specification: Material: Chrome Vanadium Steel Size Chart: Box: 22cmx15cmx5cm/8.66inchx5.91inchx1.97inch Package Includes: 1x Hex Socket Bit Set (12 Pieces) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.