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Upgrade your machining precision with the 7‑Piece Center Drill Bits Set – a versatile collection of 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, and 5 mm center drill bits, each engineered with a 60‑degree angle for flawless countersinking on lathes and metalworking rigs. Whether you’re a professional machinist or a dedicated hobbyist, this kit delivers the accuracy and durability you need for clean, perfectly centered holes every time.
Key Highlights
- Seven precise sizes (1 mm – 5 mm) covering a wide range of drilling applications.
- 60‑degree angle tip provides superior countersink performance and reduced burr formation.
- High‑speed steel (HSS) construction with a titanium nitride (TiN) coating for extended tool life.
- Optimized shank design fits standard lathe chucks and drill presses for seamless tool changes.
- Ideal for steel, stainless steel, aluminum, brass, and other non‑ferrous metals.
- Compact, magnetic storage case keeps bits organized and protects them from damage.
Why Choose This Center Drill Set?
Each bit is heat‑treated to maintain dimensional stability under high RPMs, ensuring consistent centering and a clean start for larger drill or tap operations. The 60‑degree countersink angle reduces cutting forces, delivering smoother entry and less wear on both the tool and the workpiece.
Perfect For
- Lathe turning and boring operations.
- Precision drilling for CNC and manual machining.
- Creating pilot holes for screws, bolts, and inserts.
- Repair and restoration projects requiring exact hole placement.
- Educational workshops and training labs.
Technical Specifications
- Material: High‑Speed Steel (HSS) with TiN coating
- Tip angle: 60°
- Lengths: Standard 30 mm (1.18 in) shank for all sizes
- Diameter range: 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm
- Package: Sturdy magnetic case with labeled slots
Installation & Use
Insert the desired bit into your lathe’s chuck or drill press collet, tighten securely, and set the appropriate spindle speed (typically 2,000–3,000 RPM for steel). Begin with a light feed to establish the pilot hole, then let the 60‑degree tip guide the cutter for a perfectly centered start.
Customer Assurance
We stand behind the quality of our tools. If you encounter any issues, our dedicated support team is ready to provide replacements or a full refund within 30 days of purchase.
Price: Original price was: $ 8.66.$ 4.33Current price is: $ 4.33.