Dry Diamond Core Drill Bit,HIGHDRIL 2pcs Diameter 30mm 1-1/7" with Triangle Shank Vacuum Brazed Hole Saw for Concrete Granite Marble Glass Porcelain Tile Masonry Brick

• Diameter 30mm 1-1/7",diamond length 10mm,total length 65mm,Triangle shank.
• Vacuum dry/wet brazed diamond drilling bits Core bits with triangle shank.
• Can be used without water,Dry or wet drilling.
• Triangle shank design can be gripped tightly that won't slip out easily,used in 10mm (3/8 in) Hand Drill, Bench Drill.
• Multi-purpose drilling for granite & marble,masonry,concrete,tile/ceramic,stone,etc.

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