- Description
Description
Description
3Pcs mini hss step drill bit set.
1/4″ Hex shank.Size: ..4~12mm (4, 6, 8, 10, 12).
Shank diameter: 6mm..3~12mm (3, 4, 5, 6, 7, 8, 9, 10, 11, 12).
Shank diameter: 8mm..4~20mm (4, 6, 8, 10, 12, 14, 16, 18, 20).
Shank diameter: 10mm.