1-1/4 In. Diamond Core Bit Hole Saw with 1/2 in. Shank for Drilling Granite, Marble, Ceramic, Porcelain and Concrete

These Monster brand diamond bits are made with vacuum brazed technology. They are very aggressive in that diamonds are exposed entirely. They last longer than electroplated diamond core drill bits because diamonds will not drop while drilling. They are ideal for drilling granite, marble, quartz, glass, porcelain, ceramic tiles as well as concrete. Life of these bits vary on material and conditions of use.