Stanley FatMax Screwdriver Set 9 Pieces have a chrome vanadium steel bar that allows high torque and to reduce the risk of tip breakage. The handle is moulded directly to the shaft for a virtually unbreakable bond to give a longer life and durability. The soft grip handle provides a great grip and reduced fatigue and is colour coded for easy identification. The smooth domed end offers fast, comfortable spinning action and the large diameter handle offers higher torque when driving wood screws.