Bihui Pro 20mm Diamond Hole Saw (Straight Shank Hex Fitting)

The Bihui Pro 20mm Diamond Hole Saw is a professional-grade, high-precision core drill bit engineered specifically for immaculate wet drilling through the densest architectural materials. Measuring 20mm in diameter, this heavy-duty hole saw is ideal for boring clean pathways for small plumbing pipes, electrical conduits, and heavy-duty fixing anchors across all types of ceramic tiles, modern porcelain, and delicate natural stones. Prioritised by professional tilers, plumbers, and fitters, it features a standard straight hex shank design for immediate compatibility with everyday drill chucks.

Why Choose the Bihui Pro 20mm Diamond Hole Saw?

• Electroplated Diamond Cutting Rim: The working tip is manufactured using a specialized electroplating process that coats the rim with dense, ultra-sharp premium diamond particles. This layout is optimised to deliver incredibly clean, chip-free holes through high-end wall and floor coverings.

• Universal Straight Hex Shank: Engineered with a robust hex-shaped shank, this bit fits seamlessly into standard three-jaw drill chucks found on corded and cordless hand drills. The hex design provides a positive, non-slip mechanical connection, preventing spinning inside the chuck under high torque.

• Integrated Dust Discharge Holes: The structural body is engineered with specialized relief slots. This layout is highly optimised to discharge slurry and abrasive dust core plugs away from the cutting zone, maintaining stable torque and preventing the bit from binding.

• Flawless Finish via Wet Cutting: Specially engineered to be cooled with water during operation, wet cutting ensures maximum performance and thermal management. Keeping the cutting rim wet suppresses harmful dust and prevents the diamond tips from glazing or becoming dull prematurely.

• Broad Stone and Tile Compatibility: This versatile hole saw performs remarkably well across a diverse spectrum of hard substrates. It is suitable for drilling:

  • Dense porcelain tiles

  • Traditional polished ceramic tiles

  • Hard marble and granite slabs

  • Travertine, quartz, and composite stones

Technical Specifications

• Brand: Bihui

• Product Line: Pro Diamond Series

• Diameter: 20 mm

• Shank Type: Straight Shank Hex Fitting (Standard Drill Compatibility)

• Manufacturing Process: Premium Electroplated Diamond Coating

• Drilling Mode: Wet Cutting (Water Cooling Required)

• Core Maintenance: Integrated Dust / Slurry Discharge Holes

• Recommended Substrates: Porcelain, Ceramic, Marble, Granite, and Travertine

Buy online today for fast nationwide delivery across Ireland, or select Click & Collect to pick up your order directly from our Limerick showroom.