10 Precision Screwdrivers Watchmakers Optical 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 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.