5 Precision Screwdrivers Great For Watch, Electronic & Eyeglass Repair. This is a new set of 5 precision screwdrivers. Great for watch, electronic and eyeglass repair. They have steel shafts and swivel heads. The tips are flat and measure: 1.04, 1.28, 1.46, 1.68 and 1.89 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.