Diamond Core Bit Distar KORONA RS6 32 mm x 450 mm (1 1/4") Wet Cutting

The Distar KORONA RS6 diamond core bit 32 mm x 450 mm (1 1/4") is a wet-cutting core drill accessory designed for creating precise circular holes in concrete, reinforced concrete, masonry and other mineral-based construction materials. The bit combines a diamond-cutting crown with a robust steel body to ensure steady performance during prolonged drilling operations when used with core drilling rigs or compatible handheld core drills featuring a 1 1/4" threaded connection.

Advantages

The diamond-cutting crown delivers efficient material removal and extended service life compared with conventional bits, while the long 450 mm body allows through-hole and deep penetration drilling in structural elements. Wet cutting reduces dust and helps cool the diamond segments, preserving cutting efficiency and lowering the risk of premature wear. The standard 1 1/4" connection ensures compatibility with a wide range of core drilling equipment.

Suitable for

• Drilling precise holes in concrete and reinforced concrete
• Creating openings in brickwork and masonry
• Installing pipes, conduits and anchor points in structural elements
• Use with core drilling rigs and handheld core drills with 1 1/4" thread

When it may not be suitable

This wet-cutting diamond core bit is not intended for dry drilling applications; using it without proper water supply can accelerate wear and increase the risk of overheating. It is also not designed for drilling in soft materials where a different tooth or spiral drill would be more efficient, nor for use on metal or wood.

Key specifications

• Cutting diameter: 32 mm
• Total length: 450 mm
• Connection type: 1 1/4" threaded
• Cutting method: wet diamond core drilling
• Application materials: concrete, reinforced concrete, masonry and similar mineral materials

How to use

Mount the core bit on a compatible core drill or rig with a 1 1/4" thread. Use a stable drilling setup or stand to maintain perpendicular alignment to the work surface. Start drilling at low speed to create a pilot groove, then apply moderate, consistent feed pressure while supplying adequate water to the cutting area to cool the diamond segments and remove slurry. Withdraw the bit periodically to clear debris and allow cooling. After finishing the hole, clean the bit and flush the bore to remove residual slurry.

What to consider before purchase

• Confirm your drill or rig accepts a 1 1/4" threaded core bit
• Verify the 32 mm diameter and 450 mm length meet your hole depth and clearance requirements
• Plan for a water supply or wet-cutting setup to ensure proper cooling and dust suppression
• Check that the materials to be drilled (concrete, reinforced concrete, masonry) match the bit's intended use

Usage recommendations

Use steady, controlled feed force and continuous water flow during drilling. For reinforced concrete, maintain lower rotational speed and allow more frequent extraction to clear steel cutting debris. Regularly inspect diamond segments for wear and replace the core bit when cutting efficiency drops or segments show significant loss.