6 Precision Screwdrivers Great For Watch, Electronic & Eyeglass Repair. This is a new set of 6 precision screwdrivers. Great for watch, electronic and eyeglass repair. Has hexagonal swivel heads which will not roll on the bench. The tips are flat and measure approximately 1.21, 1.38, 1.39, 1.66, 1.87 and 2.04 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.