Attributes . Manufactured with Four Detent Holes so the Pin Detent Will Engage Correctly Regardless of the Direction the Socket is Placed on the Square Drive; The Positive Control System Requires a Separate Tool to Attach or Remove the Socket, Meaning it Cannot be Removed Without Specific Intent; Ideal for Use On Stubborn or Damaged Fasteners, and also on Fasteners Made from Soft Materials; Made Using a Heat Treated Alloy for Wear-Resistance Which Helps Minimize Distortion for a Long Life; Hex Opening Holds the Bit Allowing the Bit Holder to Take the Torque Load . Names