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 Supplied inside a plastic storage case with transparent lid Draper lifetime warranty, Weight: 4.40924524 pounds, Manufacturer: Draper