12 Precision Screwdrivers Watchmakers Optical Tools 7 Precision Screwdrivers. This is a new set of 7 precision screwdrivers with 7 extra tips. Great for watch, electronic and eyeglass repair. The tips are tempered and ground to exact specifications. Has color-coded handles that make it easy to spot the tool you need. Hexagonal ends on handles prevent them from rolling off your bench. The tips are flat and measure: 0.7, 0.9, 1, 1.4, 1.6, 1.8 and 2 mm 5 Precision Phillips Screwdrivers. This is a new set of 5 Phillips screwdrivers. The hexagonal swivel heads prevent rolling and are colored coded for size identification. These can be used for changing batteries, removing with pins and repairing eye glasses. The blade sizes are: #4, #3, #2, #0, #1-2 and #1-1. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.