Bergeon offers this high quality precision screwdriver set for hobbyist, model makers, eye glass repair, electronic repair and watch repair of all kinds. This original Swiss made set comes with a 9 screwdriver, 31 additional spare blade in plastic containers color coded and a wooden case . Screwdriver sizes include: 0.50mm, 0.60mm, 0.80mm, 1.00mm, 1.20mm, 1.40mm, 1.60mm, 2.00mm & 2.50mm (metric sizes)