The Stanley FatMax Screwdriver sets have a chrome vanadium steel bar allows high torque and reduces the risk of tip breakage, and the handle is moulded directly to the shaft for a virtually unbreakable bond which gives long life and durability. The soft-grip handle gives a perfect combination of great grip and reduced fatigue in use and is colour coded for easy identification of the right tip type for the application. The smooth domed end offers fast, comfortable spinning action and the large diameter handle offers higher torque when driving wood screws.Type - Flared Tip Size 5.5mmBlade Length 100mm (4 in)