3 - Piece Hex Shank Titanium - Coated Step Drill Bits Set (3 - 12mm, 4 - 12mm, 4 - 20mm)

Name: 3PCS Titanium Coated HSS Step Drill Bit Cone Hole Cutter 3-12/4-12/4-20mm
Brand: Sunstar
Price: 7.49 USD
Availability: InStock

Product Overview

This 3 - piece step drill set is engineered for versatile drilling and hole - enlarging tasks. With hex shanks for universal compatibility and titanium coating for durability, it simplifies precision drilling across multiple materials.

Specifications

Model	Diameter Range	Length	Hex Shank (Standard)
3 - 12mm	3mm → 12mm	67mm (2.64")	6.3mm (1/4")
4 - 12mm	4mm → 12mm	75mm (2.95")	6.3mm (1/4")
4 - 20mm	4mm → 20mm	72mm (2.83")	6.3mm (1/4")

Material & Coating

Core Material: High - speed steel (HSS 4241) — Offers excellent hardness and heat resistance for long - term use.
Surface Treatment: Titanium coating enhances wear resistance, corrosion resistance, and reduces friction during drilling.

Design Features

Step - Shaped Structure:
Each drill features graduated steps , allowing you to drill multiple hole sizes with a single bit. Clear markings on each step ensure precise diameter control.
Hex Shank:
The 1/4" hex shank prevents slipping in drills, compatible with bench drills, hand drills, and cordless drills for maximum versatility.

Performance Advantages

Multi - Size Efficiency: Eliminates the need to switch bits frequently—one drill handles a range of diameters.
Precision Drilling: Step markings and sharp cutting edges ensure clean, accurate holes.
Durable & Long - Lasting: HSS 4241 + titanium coating resist wear, even on tough materials like steel and brass.
Wide Material Compatibility: Drills through sheet metal, steel plates, aluminum, brass, wood, plastic, and more.

️ Ideal Use Cases

Metalworking: Create holes in sheet metal, steel, or aluminum panels.
Woodworking: Drill precision holes in wood for joinery or DIY projects.
DIY & Repairs: Perfect for enlarging existing holes in furniture, fixtures, or automotive parts.

Usage Tips

Secure your workpiece to prevent movement.
Start drilling from the smallest step and progress upward.
Maintain a steady speed and apply light pressure; clear chips regularly for smooth drilling.

This step drill set combines versatility, precision, and durability—an essential addition to any toolbox for professionals and DIY enthusiasts alike! ️

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.