"Opti-Torque(TM) feature applies torque to the fastener sides, not corners, which allows for more torque to fastener and longer service life","Hi-visibility laser markings allows for easy identification of sockets","Great for limited spaces like dashboards or underhood compartments 1/4" DRIVE 10MM METRIC 6 POINT MID-LENGTH CHROME SOCKET AI10M6 | Matco Tools