The irwin pro comfort screwdrivers have been designed for comfort durability and safety they feature trilobular handles made from polypropylene and rubber which provide an ergonomic grip and have chrome vanadium steel shafts with corrosion protection the screwdrivers have a black phosphate magnetic tip which helps to improve screw alignment provides easy driving and extends the life of the tip these screwdrivers are vde certified for electrical work up to 1000 volts