The irwin pro comfort screwdrivers have been designed for comfort durability and safety they feature a dual material trilobular handle for an ergonomic grip and are made with 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 this set of 9 contains the following sizes 3 x pozi pz0 x 80mm pz1 x 100mm pz2 x 125mm3 x parallel 4mm x 100mm 55mm x 150mm