This slotted screwdriver is specially adapted for fine, delicate work. Ideal for watch and clock makers, jewelers, opticians, toolmakers, etc. The body is made from steel that is knurled and nickel-plated. The blade is made of properly tempered steel. Blade is replaceable, and a slight turn of the knurled chuck securely locks the blade so it will not turn or come out. When not in use, the blade can be reversed into the screwdriver body. Screwdriver is approximately 3.75" long.