This Torx Socket Bit features a 3/8" (9.53 mm) drive and a T40 size, ideal for recessed Torx screws. With a 19 mm diameter and 4.3 mm blade length, it ensures precise torque transfer and durability for professional fastening tasks. The total length of 50 mm offers optimal reach and control. Key features: - 3/8" drive connection for secure socket attachment - T40 size compatible with recessed Torx screws - 19 mm diameter for enhanced strength and durability - 4.3 mm blade length for effective screw engagement - Total length of 50 mm for versatile application in socket spanners