The Ken-Tool 5-pc MorTorq socket tool set, No. 30260, designed for use on MorTorq fasteners, offers a “spiral drive” fastener design where the driver engages into the four curved “wings” in the fastener head and allows the driver head to have complete contact with the fastener’s recessed drive head. These features allow for uniform torque delivery, combating tool slippage, and fastener head and drive tool rounding out. This set 3/8” driver and M0, M1, M2, M3 and M4 drive heads and a steel storage rail. The MorTorq driver and drive heads are made from chrome-plated premium grade tool steel alloy, hardened to 60 Rockwell, providing shock resistance and durability.