Diamond Core Drill Bits - 1-3/8 Inch with 5/8-11 Thread Granite Hole Saw Dry or Wet Drilling Hard Stone Marble Concrete Quartz Countertop Laser Welded Masonry Coring(35mm)

KWD 20.500

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Size -- 1 3/8 inch core drill bit (35mm) ,diamond height 10mm, total length 100mm, diamond grit #25/35,working length 80mm, 5/8-11 thread of the granite drill bit (use wet will greatly prolong the segment life)
Application -- Laser Welded Diamond Dry Drilling Core Bits is designed for drilling hard granite, marble, engineering stone, concrete, brick. Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities.
High Quality Raw Material --Using laser welded technology,improve the performance of segments,avoid segments off during drilling process.The vacuum brazing protective layer on the surface of the core steel offers clean cut & steel core protection
Fast and Smooth Drilling -- The diamond grains at the top provide superior cutting strength to create a highly accurate, smooth cut with no broken edges
Compatible with most angle grinders for dry/wet drilling. (If you drill through thick granite ,we recommend you to add enough water to help cooling the bits,which could prolong the lifetime)

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