4-Way Pen Screwdriver offers the convenience of four precision drivers in a one-pocket tool for efficient results. It features a pen-type design with a pocket clip and four tip sizes in one space-saving tool. Two double-ended bits include sizes 5\/32" , 1\/8" , 0PT and 1PT. Magnetic bits attract and hold small screws. Use in toy assembly, battery compartments, eyeglasses, electronics and cell phones. Diameter is 1\/2". Length is 5.4".