The blade is made from high grade Silicon - Manganese steel, which no other make uses. This steel gives spring effect also. The blade is differentially hardened & tempered to resist wear, bending and meet high torque requirement. Hardness on tip: 55 to 58 HRC. Other makes offer much less hardness on tip. Higher the hardness higher is the wear resistance. The blade tip is magnetized to lift small screw etc. from confined spaces or to hold the screw in position The handle is made from high grade CA Plastic, which is non-flammable and unaffected by oil, petrol, grease, water - practically anything. The handle can stand any rough use, even hammering. The tip is precision - ground to 100 angle, which ensures firm grip in the screw slot. Bright & smooth Nickel Chrome plating finish effectively protects blade against corrosion. The handle is precisely designed to give comfortable grip even at higher torque.