90 Degree Chamfer Countersink 1 Flute End Mill Drill Bit, HSS M2AI Uncoated, 30mm Blade Diameter, 10mm Shank, 71mm Overall Length, Sharp Deburring Cutter for Aluminum Brass Bronze Iron Stainless Plastic, Great for Home or Shop Projects

90° Chamfer Countersink Bit, 1 Flute, HSS M2AI Uncoated
✔️ 30mm blade, 10mm shank, 71mm OAL; 2 cutters included

These 90-degree chamfer countersink bits are designed for precise edge finishing and screw seating across metals, plastics, and wood. Ideal for home workshops and light industrial work to deburr, chamfer, and countersink holes.

✅ Blade diameter 30mm, shank 10mm, overall length 71mm, HSS M2AI uncoated
✅ 1 flute with 90° countersink angle for sharp openings
✅ Includes 2 cutters; full ground for accuracy and finish
✅ Suitable for aluminum, brass, bronze, iron, stainless, plastics, wood
✅ Use proper clamping, appropriate speed/feeding, and coolant when needed
✅ Countersink body diameter must match head diameter of screw or rivet

💡 What is a countersink bit best used for in metalworking and woodworking? This handy tool helps seat screws flush and clean up edges. - Creates conical opening for flush screw heads - Deburrs and chamfers edges on metals, plastics, and wood - Requires proper clamping, pilot hole, and correct speed