Metric Sizes.
Shank has 3 flat sides for a positive grip.
Double fluted.
Sizes are:
1/4 in. shank: 9 step bit 4-12 mm (4, 5, 6, 7, 8, 9, 10, 11, 12 mm).
1/4 in. shank: 5 step bit 4-12 mm (4, 6, 8, 10, 12 mm).
3/8 in. shank: 7 step bit 6-18 mm (6, 8, 10, 12, 14, 16, 18 mm).
3/8 in. shank: 10 step bit 4-22 mm (4, 6, 8, 10, 12, 14, 16, 18, 20, 22 mm).
3/8 in. shank: 14 step bit 6-35 mm (6, 8, 10, 13, 16, 18, 20, 22, 25, 28, 28, 30, 32, 35 mm).
Aluminum Case.
