{"product_id":"bihui-20mm-vacuum-brazed-diamond-dry-drill-bit","title":"Bihui 20mm Vacuum-Brazed Diamond Dry Drill Bit","description":"\u003cp data-path-to-node=\"5\"\u003eThe Bihui 20mm Vacuum-Brazed Diamond Dry Drill Bit is a professional-grade, high-speed rotary accessory engineered specifically for drilling pristine, medium-diameter clearances in the hardest wall and floor coverings. Shifting from smaller anchor shanks to an angle-grinder platform, this heavy-duty core bit features an integrated M14 thread designed to withstand the extreme thermal demands of high-RPM dry cutting. It is highly recommended for tilers, plumbers, and electrical installers who need to bore precise holes for copper pipework, incoming utility feeds, structural bolts, and heavy-duty bathroom fittings through dense porcelain and natural stone.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003eWhy Choose the Bihui 20mm Brazed Diamond Dry Drill Bit?\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eDirect-Fit M14 Threaded Connection:\u003c\/b\u003e Engineered to spin directly onto the spindle of standard 115mm or 125mm high-speed angle grinders. This rigid, direct mechanical layout eliminates the need for chuck keys or separate mandrel adapters, delivering total concentricity and zero-wobble freehand drilling at speeds up to 11,000 RPM.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eVacuum-Brazed Core with Lubricating Wax:\u003c\/b\u003e Manufactured using advanced vacuum-brazing metallurgy, which molecularly fuses premium industrial diamond grit directly to the cutting rim. The core is packed with a specialized internal cooling wax that liquefies during operation to control friction heat, ensuring a long tool life without water.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eIntegrated Debris and Dust Discharge Holes:\u003c\/b\u003e The steel cylinder body is engineered with specialized lateral dust slots. This layout allows waste fragments, stone powder, and core plugs to discharge dynamically during the cut, preventing the bit from binding or overheating inside deep holes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-path-to-node=\"7,3,0\" data-index-in-node=\"0\"\u003eProfessional Angled Entry Start:\u003c\/b\u003e To achieve micro-precise hole placement without a pilot bit, simply introduce the cutting edge to the tile surface at a calculated 45° angle to create a starting groove, then gradually upright the grinder to a 90° positioning to finish the plunge cleanly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-path-to-node=\"7,4,0\" data-index-in-node=\"0\"\u003eFlawless Multi-Substrate Application:\u003c\/b\u003e Built to slice through dense vitrified glazes and igneous stones effortlessly, this robust 20mm hole saw delivers immaculate, chip-free boundaries across:\u003c\/p\u003e\n\u003cul data-path-to-node=\"7,4,1\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,1,0,0\"\u003eDense porcelain floor tiles and ultra-thin large format slabs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,1,1,0\"\u003eHeavy natural stone panels, including granite, quartzite, and travertine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,1,2,0\"\u003eLuxury polished marble, limestone, and architectural ceramics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"8\"\u003eTechnical Specifications\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eBrand:\u003c\/b\u003e Bihui\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003eProduct Type:\u003c\/b\u003e Professional Dry Diamond Core Bit \/ Hole Saw\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eHole Cutting Diameter:\u003c\/b\u003e 20 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eMounting Connection Type:\u003c\/b\u003e Industry-Standard M14 Female Thread (Direct Angle Grinder Fit)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,4,0\"\u003e\u003cb data-path-to-node=\"9,4,0\" data-index-in-node=\"0\"\u003eManufacturing Bond:\u003c\/b\u003e High-Performance Vacuum-Brazed Diamond Matrix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,5,0\"\u003e\u003cb data-path-to-node=\"9,5,0\" data-index-in-node=\"0\"\u003eCooling Mechanism:\u003c\/b\u003e Integrated Internal Cooling Wax Core \u0026amp; Lateral Dust Discharge Holes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,6,0\"\u003e\u003cb data-path-to-node=\"9,6,0\" data-index-in-node=\"0\"\u003eMaximum Safe Operating Speed:\u003c\/b\u003e Supports up to 11,000 RPM\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,7,0\"\u003e\u003cb data-path-to-node=\"9,7,0\" data-index-in-node=\"0\"\u003eRecommended Substrates:\u003c\/b\u003e Porcelain, Ceramics, Granite, Marble, Quartz, and Sintered Stone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"10\"\u003eBuy online today for fast nationwide delivery across Ireland, or select Click \u0026amp; Collect to pick up your order directly from our Limerick showroom.\u003c\/p\u003e","brand":"BIHUI","offers":[{"title":"Default Title","offer_id":58124810944899,"sku":"BHDBDQ20","price":17.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/6067\/5231\/files\/53718BF8-8CE7-43DC-8E5A-ECC16A7B44D0.png?v=1779891211","url":"https:\/\/plumbdirect.ie\/products\/bihui-20mm-vacuum-brazed-diamond-dry-drill-bit","provider":"Plumbdirect","version":"1.0","type":"link"}