This screwdriver features a hexagonally shaped head to prevent rolling. Screwdriver body is made from steel that is knurled and nickel-plated. The blade is made of properly tempered steel. When not in use, the blade can be reversed into the screwdriver body. Slotted blade is 0.100" wide and 1 7/8" long. Overall length of screwdriver (with blade) is 4.25".