Dry Diamond Drill Bits Set 5/6/8/10/12mm 5Pcs Tile Hole Saw Kit for Ceramic Porcelain Marble Granite Quick Change Hex Shank with Storage Case

【Package Include 5 Pcs Bits】: Diameter 5/6/8/10/12mm dry core drill bits; Diamond height 8mm; Diamond grit #50/60; Total length 65mm 【Value For Money】: Quick and accurate dry drilling tile ceramic porcelain, granite, marble and hard materials etc. 【Sharpness and Durability】: Vacuum brazed technology, high-quality materials and cooling wax greatly improve working efficiency and extend product life 【Easy To Install and Storage】: Quick-fit hex shank can easy install in hand drill and bench drill etc. The storage case is great for keeping everything organized 【Attention】: Faster the RPM, longer the working life; Do not use impact mode