IRW1951848 Pro Comfort Screwdriver Parallel Tip 5.5mm x 100mm 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. Specifications: Tip Size: 5.5mm. Blade Length: 100mm.