9pc Precision Jewelers Screwdriver Set Watch Jewelry Eyeglasses Repair Tools Precision screwdrivers in hard-to-find ultra-fine sizes for watchmaking, jewelry repair, electronics Steel tips hardened to 35-40 HRC, solid brass shaft, spinner caps & aluminum bench stand/holder Flat/slotted sizes 0.5, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 2.0 & 2.5mm plus replacement tip for each size Ridged shafts for non-slip hold, spinner caps let you apply force with palm while turning Color-coded caps for quick size identification, brass set screws; 3" length with 1" tip