Written by 
3pcs 3‑12mm 4‑12mm 4‑20mm HSS Straight Groove Step Drill Bit Set Titanium Coated Wood Metal Hole Cutter Core Drill Bit Set
Upgrade your workshop with this versatile 3‑piece step drill bit set, engineered for precision and durability. Whether you’re drilling through hardwood, softwood, or metal, these high‑speed steel (HSS) bits deliver clean, accurate holes with a smooth finish every time.
Product Overview
Each set includes three step drill bits in the following sizes: 3‑12mm, 4‑12mm, and 4‑20mm. The titanium coating enhances wear resistance, reduces friction, and ensures a longer life span, even under heavy-duty use.
Key Highlights
- Multi‑Material Compatibility: Perfect for wood, metal, plastic, and composite materials.
- HSS Construction: High‑speed steel core for excellent heat tolerance and strength.
- Titanium Coating: Adds a protective layer that resists wear and keeps the bit sharp.
- Straight Groove Design: Enables precise depth control and clean, straight cuts.
- Core Drill Bit: Ideal for drilling large diameter holes quickly and accurately.
- Heat‑Resistant: Maintains performance even during prolonged drilling sessions.
- Compact Storage: Comes with a convenient case for easy organization.
Benefits for Professionals and DIY Enthusiasts
From carpenters to metalworkers, this set offers:
- Consistent hole diameters for tight tolerances.
- Reduced tool wear, saving you time and money.
- Minimal vibration for a smoother drilling experience.
- Easy to swap between sizes without changing the drill.
Specifications
- Material: HSS (High‑Speed Steel) with Titanium Coating
- Sizes: 3‑12mm, 4‑12mm, 4‑20mm
- Use: Wood, Metal, Plastic, Composite
- Compatible with: Standard drill presses and handheld drills
- Packaging: 3‑piece set with storage case
How to Use
Mark the desired hole size, select the appropriate bit, and drill at a moderate speed. The step design allows you to stop at any diameter without needing to change bits. For metal, apply a light lubricant to reduce heat build‑up.
Why Choose This Set?
Durability, precision, and versatility make this step drill bit set a must‑have tool for any workshop. The titanium coating and HSS core ensure long‑lasting performance, while the wide range of sizes keeps you ready for any project.
Price: Original price was: $ 4.20.$ 1.43Current price is: $ 1.43.