[Torque Strength] - Chrome molybdenum steel provides excellent durability and strength with every impact movement; black phosphate finish for extra protection against rust and corrosion.
[Pin Hole] - Individual pinhole base design adds extra security by placing in a locking pin for stability when exerting strong torque motion.
[Great Tools] - Use with ratchet to improve speed in tightening hex drive fasteners. And the product has no insulation properties and is not suitable for electrical environments.