3‑Piece Spiral Step Drill Bit Set – AlTiN Coated M35 Steel (1/8"–7/8")

Drill clean, smooth holes through stainless steel and sheet metal like a pro with this 3‑Piece Spiral Step Drill Bit Set. Engineered with M35 high-speed steel and coated with AlTiN (Aluminum Titanium Nitride) for extreme hardness, wear resistance, and heat protection, these bits are built to perform.

Perfect for DIYers, electricians, and professionals who need precise multi-size hole drilling in a single bit.

🔧 Key Features:

• ✅ Spiral Flute Design – Ensures smooth, chatter-free cutting and faster chip removal

• ✅ AlTiN Coating (89HRC) – Offers outstanding durability, corrosion resistance & thermal stability

• ✅ C-Profile Cutting Edge – Provides clean, accurate cuts with minimal bit walking

• ✅ M35 HSS Core – Superior strength and longevity when drilling stainless steel, aluminum, and more

• ✅ Hex Shank Fit – Compatible with most standard drills & drivers

• ✅ 3 Sizes in One Set – Covers common hole sizes up to 7/8" (22mm)

🧰 What’s Included:

• 3x Step Drill Bits (in sizes ranging from 1/8" to 7/8")

• Compact Storage Case

📌 Note:

• Recommended for use on metal sheets up to 1/8" (3mm) thick

• For stainless steel, max thickness: 1mm

• Use cutting oil or coolant for extended drilling sessions

💡 Get the power, precision, and durability your toolbox has been missing. Ideal for sheet metal, stainless steel, aluminum, plastic, and more.