Professional 38mm (1 1/2 inch) diamond core drill bits engineered for precision stone drilling applications. These industrial-grade tools feature advanced diamond segments for superior performance in marble, granite, sandstone, and limestone materials.

• Outside Diameter: 38mm (1 1/2 inch)
• Shank Size: 10mm (3/8 inch)
• Total Length: 83mm (3 1/4 inch)
• Maximum Drilling Depth: 50mm (2 inch)
• Segment Height: 8mm

Available in two professional segment types:

• Normal Segment Type - Balanced performance for general stone applications
• Turbo Segment Type - Enhanced cutting speed for demanding industrial use

Diamond core bits operate through a milling mechanism rather than traditional cutting. During manufacturing, individual diamond crystals are strategically exposed on the segment surfaces. The metal matrix securely holds each diamond in position, creating a comet's tail support structure that reinforces the bond behind each crystal.

The optimal performance is achieved through precise equilibrium between diamond work efficiency and bond abrasion resistance. For hard, dense materials, softer segment bonds enable rapid diamond replacement to maintain cutting efficiency. For soft, abrasive materials, harder bonds retain diamonds longer for extended tool life.