This Hex Socket Bit features a 1/2 inch (12.5 mm) connection size and a 9 mm hex driver diameter, ensuring precise engagement with in-hexagonal fasteners. With a total length of 75 mm and a blade length of 25 mm, it is ideal for professional mechanical and assembly tasks requiring reliable fastening performance. Key features: - Connection size: 12.5 mm (1/2 inch) - Hex driver diameter: 9 mm - Total length: 75 mm; blade length: 25 mm - Durable construction for extended use - Compatible with standard socket wrenches