Diamond Core Drill Bit Set BRSCHNITT Hole Saw Kit for Porcelain Tile Ceramic Marble Drilling,11pcs Bit（6/8/10/20/25/28/32/35/50/65mm bits &50mmchamfer bit）.

✔Size Diamond drill bit -1/4" 5/16" 3/8" 4/5" 1-1/8" 1" 1-1/4" 1-3/8" 2" 2-4/7"（6/8/10/20/25/28/32/35/50/65mm bits &2“ chamfer bit）diamond height 10mm, total length 65mm,with Triangle Shank ✔Size Diamond chamfer bit :2" Inch (50mm), 50 mm workable length, Grit #80,with Hex Shank total lenght 70mm Top Angle 60 degree, ✔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 ✔Machine --Suitable for any electric drill,hand drill,Bench Drill, When use Angle Grinder,please install angle grinder drill chuck