Product Specifications Six DIFFERENT SIZE: The Mega Mini Screwdriver Set comes with four flathead sizes (1.4mm, 2.0mm, 2.4mm, and 3.0mm) and two Phillips sizes (#0, #1). Our precision screwdriver set is perfect for repairing watches, jewelry, eyeglasses, and anything else that has tiny screws. This set of tiny screwdrivers is amazing.