7 Precision Screwdrivers Great For Watch, Electronic & Eyeglass Repair. This is a new set of 7 precision screwdrivers. Great for watch, eyeglass and electrical repair. These screwdrivers are nickel-plated to prevent rust. Has reversible, double-ended blades and threaded ferrules for easy replacement. The tips are flat and measure: 0.58, 0.73, 0.78, 0.88, 0.95, 1.20 and 1.27 mm 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.