High Quality HSS Titanium Coated Stepped Drill Power Tools Carbide step Drill Bit

HSS Step Drill Bit

HSS Straight Flute Step Drills

HSS Spiral Flute Step Drill Bit 

(1) Stright Flute / Spiral Flute
4-12mm x 9 steps
4-20mm x 9 steps
4-30mm x 14 steps
4-32mm x 15 steps
6-20mm x 8 steps
6-30mm x 13 steps
6-30.5mm x 10 steps
6-32mm x 9 steps

3/16"-1/2" x 6 steps
1/8"-1/2" x 13 steps
1/4"-3/4" x 9 steps
3/16"-7/8" x 12 steps
7/16"-1-1/8" x 12 steps
1/4" - 1-1/2" x 11 steps
1/2" - 1" x 9 steps
9/16" - 1" x 8 steps
3/4" - 1-3/8" x 11 steps
13/16" - 1-3/8" x 10 steps

(2) Shank:
      Round shank;
      Hex shank;
      Three flat shank;
      Hex quick change shank;

(3) Surface:
      White bright;
      Titanium coated;
      Black nitrided;
      Cobalt coated;

(4) 3pcs Step Drills Set
3/16 - 1/2 x 6 step
1/8 - 1/2 x 13 step
1/4 - 3/4 x 9 step
4 - 12mm x 9 step
4 - 20mm x 9 step
4 - 30mm x 14 step

4 - 12mm x 9 step
6 - 20mm x 8 step
6 - 30mm x 13 step
Packing: (a) wooden box. (b) aluminum case. (c) blister with card.