Baolian Nano Coated Pyramid Drill Bit Multi-Functional Metal Tapered Super Hard Reaming Drill Stainless Steel Special Step Drill

Nano coating for enhanced hardness and wear resistance, providing sharper cutting edges.

Industrial-grade cutting capability achieved through advanced nano technology.

Step drill design with 15 graduated sizes for versatile hole drilling without burrs.

Easy chamfering and multi-purpose use for convenience.

Reinforced drill shank for increased durability and reduced breakage.

Universal hex shank ensures secure grip and compatibility with various machines including electric drills, bench drills, and screwdrivers.

32, 30, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4

Stainless steel

Iron plate

Copper plate

Aluminum plate

Wood

Plastic

| Specification (Step Range) | Cutting Length (mm) | Shank Diameter (mm) | Total Length (mm) |

|----------------------------|---------------------|---------------------|-------------------|

| 3-12mm (10 steps) | 43 | 6.1 | 73 |

| 3-13mm (11 steps) | 52 | 6.1 | 82 |

| 4-12mm (9 steps) | 49 | 6.1 | 73.5 |