BRSCHNITT Diamond Drill Bit 12mm,BRSCHNITT 10pcs 1/2 Inch Diamond Hole Saw Drill Bit for Porcelain Tile Ceramic Stone Granite Marble,Hex Shank Dry Drilling Diamond Core Drill Bit Set

Size --10pcs 1/2"(12mm), diamond height 8mm, total length 65mm,quick-fit 6.5mm,diamond grit #50/60 of diamond core drill bit

Wide Applications --Diamond core bits are worked great for dry drilling holes through hard porcelain tile, ceramics,bathroom tile,granite & marble, masonry, concrete, glass, hard plastic with ease. Using water could prolong the lifetime

Super Quality Raw Material --Using vacuum brazed technology ,which increases resistance to temperature and friction,to make the diamond particles better attach to the core steel,imporve the performance and lifetime.Constructed with high grade diamond grit for effortless cutting and improved durability in tough applications.High-quality core steel body helps to be more efficient and durable, not easy to deform

High Performance --Special design of spiral groove at the top of bit helps for chip removal,Wax inside the drill bit helpful for Cooling and Lubrication

Machine --Suitable for any electric drill,hand drill,Bench Drill, When use Angle Grinder,please install angle grinder drill chuck