Solid Carbide Step Drill Bit High Speed Multi Diameter Tool for Metal Stainless Steel Aluminum 2/3/4/5/6mm Steps

Introduction:

This solid carbide step drill bit is a precision-engineered cutting tool designed for high-speed multi-diameter drilling in metals, including stainless steel, aluminum, and alloy steels. Its unique step design (2/3/4/5/6mm) allows for smooth hole enlargement in a single operation, eliminating the need for multiple drill bits. Made from ultra-hard tungsten carbide, it delivers superior wear resistance and extended tool life even in demanding machining conditions.

Features:

✔ Solid Carbide Construction – Exceptional hardness and heat resistance for long-lasting performance.

✔ Multi-Diameter Steps (2/3/4/5/6mm) – Drill and chamfer holes in one pass, saving time and tool changes.

✔ High-Speed Capable – Optimized flute design for efficient chip evacuation in CNC and manual drilling.

✔ 135° Split Point Tip – Reduces walking and ensures precise hole starts.

✔ Polished Surface Treatment – Minimizes material adhesion (especially for aluminum).

Advantages:

✅ Reduced Cycle Times - Combines multiple operations into one tool path

✅ Exceptional Hole Quality - Produces burr-minimized holes with precise diameters

✅ Improved Process Stability - 3-flute design eliminates chatter in automated applications

✅ Extended Tool Life - Carbide substrate withstands high-temperature machining

✅ Space-Saving Design - Replaces multiple conventional drills in your tool magazine

Applications:

• Sheet Metal Fabrication (HVAC, automotive panels)

• CNC Machining (precision hole enlarging/deburring)

• Stainless Steel Components (food processing equipment, surgical tools)

• Aerospace & Electronics (thin-wall drilling in aluminum alloys)

Detailed Pictures:

Our workshop:

New Customer Special Offers:

To help you experience our premium products, we’re excited to offer the following exclusive promotions for first-time buyers:

1.Free Test Samples

Get free samples (total value ≤ $20 USD) when you cover the international shipping cost.

Perfect for evaluating our product quality and performance risk-free.

2.$50 USD Discount on First Order

New customers can enjoy a $50 discount on the first order of $500 or more.

A great way to start our partnership with extra value!

Our advantages:

1.Advanced grinding machines: All of our grinding machines are WALTER and SAACKE brands.

2.Advanced inspection machines: We have ZOLLER, OMEGA, PG1000, etc. For inspecting each carbide tools.

3.Fast feedback: we offer 24 hours online service

4.Strict quality control system:
We strictly adhere to a three-stage inspection process for each tool:
Raw material inspection
Semi-finished product inspection after production
Final inspection after coating (pre-shipment check)

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