Hardened chrome vanadium steel round blades with chrome plating for corrosion protection Larger sizes have a hex bolster on the shaft for turning with a spanner to apply additional torque Magnetic tips with black phosphate coating for added durability Comfortable moulded grip handles made from high impact resistant plastic Easy-to-clean and resistant to oils and chemicals Anti-roll design for safety on flat surfaces Hang holes for convenient storage Draper lifetime warranty, Weight: 0.9700339528 pounds, Manufacturer: Draper