Professional 70mm diamond core bit designed for precision drilling in stone materials including marble, granite, sandstone, and limestone. Ideal for countertop fabrication, kitchen installations, and general stone working applications.

Diamond core bits operate through a milling process rather than traditional cutting. During manufacturing, individual diamond crystals are exposed on the segment surfaces, performing the milling work while being securely held by the metal matrix.

The optimal performance is achieved through precise balance between diamond work efficiency and bond abrasion-resistance. For hard, dense materials, softer segment bonds are used to facilitate diamond replacement, while soft, abrasive materials require harder bonds for extended diamond retention.

Additional sizes and specifications can be manufactured upon request to meet specific project requirements.