Diamond Core Drill Bit Dedra H1221 — Ø68 mm, length 150 mm for concrete, gres, stone

Diamond core drill bit Dedra H1221 — Ø68 mm, length 150 mm for concrete, gres, stone is a cylindrical cutting tool with a 68 mm cutting diameter and a total length of 150 mm designed for making precise circular holes in hard mineral materials. The bit has a diamond-segment cutting edge engineered to cut and remove material efficiently while producing clean cores suitable for plumbing, electrical installations, anchors and pipe passages in masonry and dense surfaces.

Advantages

The diamond segments provide high wear resistance and extended service life when working on reinforced concrete, gres (porcelain stoneware) and natural stone. Its 68 mm diameter and 150 mm length balance cutting depth and maneuverability for common through-holes and partial-depth cores. The construction ensures stable drilling with reduced vibration and a neat hole edge, minimizing the need for secondary finishing.

Suitable for

• Creating holes for plumbing pipes and sleeves in concrete and stone walls
• Forming openings for electrical conduits and junction boxes in masonry
• Drilling anchor and bolt holes in dense building materials
• Cutting cores in gres and porcelain stoneware for fixture installation

Key specifications

• Cutting diameter: 68 mm
• Total length: 150 mm
• Cutting edge: diamond-segment
• Intended materials: concrete, gres (porcelain stoneware), natural stone
• Application type: core drilling for through-holes and partial-depth cores

How to use

Secure the core bit in a compatible core drill or hammer drill with appropriate arbor, ensuring proper mounting and concentricity. When drilling, start at low speed to establish the groove, then increase speed and apply steady axial pressure without forcing the tool. For reinforced concrete or thick stone, use water cooling where supported to extend segment life and reduce dust. Periodically withdraw the bit to remove debris and allow cooling; complete the core removal by backing the bit out of the hole once the cut is finished.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, dust mask, hearing protection and gloves). Match the drill's power and RPM range to the bit and the specific material. For dry drilling on gres or porcelain, use intermittent cutting and light pressure to prevent cracking; for prolonged work on concrete or stone, use water cooling and a drill stand to improve accuracy and bit longevity.