HSS plieno - Kas 2 mm didėjimo žingsniai - 3 grąžtai: 4-12 mm: 4, 5, 6, 7, 8, 9, 10, 11, 12 mm, 4-20 mm: 4, 6, 8, 10, 12, 14, 16, 18, 20 mm, 4-30 mm: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30 mm,