The blade is made of a high-grade silicon-manganese steel that no other manufacturer produces. This steel has a spring effect as well. The blade is differentially hardened and tempered to increase wear resistance and torque value. The handle is made of high grade C.A. Plastics, which are non-flammable and unaffected by oil, gasoline, grease, water, and almost anything else. The tip is precision ground to a 50-degree angle to ensure a firm grip in the screw slot. The blade finish with bright Nickel Chrome plating effectively protects the blade from corrosion. Suitable for testing at minimum 90 DC and 60 AC voltages and up to 500 Volt AC. The blade has a PVC insulation sleeve and a resistance of 1 mega ohm to prevent electric shock.