Diamond core drill set Smart model SM-25-SET9, M14 connection, diameters 6–68 mm, 9 pieces

Diamond core drill set Smart model SM-25-SET9 contains nine M14-shank core bits with diameters ranging from 6 mm to 68 mm. The set is designed for drilling precise circular holes in hard materials such as concrete, masonry and natural stone. Each core bit features a diamond-cutting edge compatible with rotary and angle drills that accept M14 accessories, providing a selection of sizes useful for plumbing, electrical, HVAC and general installation tasks.

Advantages

The Smart SM-25-SET9 set delivers a versatile range of diameters in a single kit, reducing the need to switch individual bits on site. M14 connection ensures compatibility with many common drills and angle grinders without additional adapters. Diamond cutting segments are intended to provide efficient penetration and extended life when used on recommended materials, enabling accurate hole placement and clean circular cuts.

Suitable for

• Drilling holes for pipes and conduits in concrete and masonry
• Creating cable and fixture openings for electrical installation
• Penetrations for HVAC ducts and fittings
• General building and renovation jobs requiring variable hole diameters

Key specifications

• Connection type: M14 shank
• Number of pieces: 9 core bits
• Included diameters: 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 35 mm, 68 mm
• Intended materials: concrete, masonry, natural stone

How to use

Select the appropriate diameter core bit for the required opening and securely attach it to a compatible drill or angle grinder with an M14 connection. Mark the drilling location and, if possible, create a small pilot mark to stabilize the bit. When drilling, apply steady, even pressure and maintain the tool perpendicular to the surface. For harder materials and larger diameters, use controlled speed and periodic cooling or flushing to remove debris and reduce heat buildup. After completing the hole, withdraw the core slowly to avoid snagging and inspect the edge for cleanliness.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, gloves and a dust mask. Where possible, use water cooling or intermittent drilling to extend bit life and minimize dust. Confirm that your drill supports M14 accessories and select correct rotational speed and feed pressure for the material and core diameter to achieve optimal results.