10 Precision Screwdrivers Watchmakers Repair Hand Tools 5 Reversible Slotted Screwdrivers. This is a new set of 5 reversible slotted screwdrivers. Perfect for screws used in miniature models, eyeglass frames and electronic products. These have hexagonal heads to prevent them from rolling. The lightweight handle is knurled, polished aluminum with a swivel palm top. Tip sizes measure approximately: 0.86, 0.90, 1.02, 1.18 and 1.45 mm 5 Precision Screwdrivers. 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.