LOHOME&reg; Screwdriver, Pack of 3 PCS Precision Eyeglass Repair Tool 3 in 1 Mini Stainless Steel Screwdriver Keychain Flat Head Nut for Optical, Eyeglass Frames, Sunglasses, Jewellery, Watches The repair tool include: Flat head screwdriver / Phillips screwdriver / Star nut driver. Compact miniature precision keyring screwdriver. Stainless steel material. With a keychain, portable and easy to hang. Can be used to repair or screw up screws for glasses, watches, cellphones and other precise devices.