* Bit: Drop-forged, Heat-treated S2 alloy steel, durable to use with its high hardness (58-60 HRC).* Drive Sockets: Heat-treated Chrome Vanadium Steel, hardened to increased torque power.* Blue plated finish for complete rust and corrosion resistance.* Chamfered edges to ensure a smooth fit and protection for both your bit ends as well as your fasteners.* Great for use with breaker bars, ratchet handles and torque wrenches.* The socket bit is for hand tools only.* Triple Square fasteners are mostly common on Cylinder head bolts, Retaining Bolts, Drive train components, Door hardware, Disc brake calipers, and other applications.
