This Action Triple Square Bit features a 12 mm dimension and 11 mm blade length, providing precise engagement with M12 fasteners. Its 55 mm total length and 1/2 inch (12.5 mm) connection size ensure compatibility with standard socket spanners for efficient torque application. Key features: - Triple square bit profile for secure fastening - 12 mm dimension tailored for M12 fasteners - 11 mm blade length for optimal grip - 55 mm overall length for extended reach - 1/2 inch (12.5 mm) connection size for socket compatibility