Step Drill Straight Flute | 4-12mm (9 Step)
Step Drill Straight Flute | 4-20mm (9 Step)
Step Drill Straight Flute | 6-30mm (13 Step)
Step Drill Straight Flute | 6-40mm (12 Step)
Step Drill Set 3 Piece | 4-12, 4-20, 6-30mm
