Sizes of the drills
Each set comes with 10 PCB mini drills and 25 twist drills. The PCB drills are 0.1~1 mm in size or 0.3~1.2 mm in size, in 2 different set. The twist drills are in 9 sizes: 0.5mm, 0.6mm, 1.0mm, 1.2mm, 1.5mm, 1.8mm, 2.0mm, 2.35mm and 3.0mm.