Diamond countersink for angle grinder – M10 conical milling bit for chamfering and enlarging holes in tiles and granite

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4-in-1 Versatile Function for Precision Work

This diamond chamfer bit for angle grinders acts as an efficient 4-in-1 accessory, handling drilling, enlarging, grinding, and shaping holes in a single workflow. Its conical profile makes it easy to create clean, accurate bevels and smooth edges on hard materials without having to swap tools mid-job.

High Durability with Vacuum-Brazed Diamonds

The tool features a vacuum-brazed industrial diamond coating that delivers exceptional wear resistance and consistent, even grinding performance. Its solid metal alloy body is engineered for high speeds of up to 11,000 rpm and provides optimal vibration dampening, preventing edge chipping and significantly extending service life.

Stable, Chip-Free Operation for Wet and Dry Grinding

The balanced construction ensures smooth, chatter-free running, preventing micro-cracks and chipping in delicate or expensive materials. Integrated cooling wax inside the core enables effective dry grinding without overheating, while the thoughtful design rapidly clears dust and keeps temperatures low during continuous use.

Universal Compatibility and Simple 3-Step Operation

The grinding bit mounts directly onto most standard 100-type angle grinders (M10 thread) and can also be used with standard drills via the included adapter. It is suitable for a wide range of materials including granite, marble, ceramic, porcelain tiles, and concrete. Using a simple 3-step technique—start at a 45° angle, tilt upright to 90°, and rotate in circular motions—you can effortlessly achieve a professional finish.

Technical Specifications

Detailed specifications to help you make the right purchasing decision.

Colour: Gold

Materials: Vacuum-brazed diamonds and metal alloy

Diameter: 10–38 mm / 10–50 mm

Weight: 200 g / 415 g

Mounting Thread: M10 thread

Applications: Drilling, hole enlarging, grinding, and chamfering