Diamond Hole Saws Granite Drill Bit,3.54" Drill HoleCoated Masonry Tools, 10mm Shank Hole Saws Cutter Tool for Drilling Hard Granite Glass Stone 1PCS

【Parameter】- Shank:10mm/0.39";Drill Hole:90mm/3.54";Total Length:80mm/3.15";Hole Distance:50mm/1.97" 【Widely Used】- Diamond hole saw drill bit can be used with a standard electric drill Cut perfect circles with these tools,Suitable for Marble,Granite,Tile Ceramic,Stone,Engineering stone,Rebar Concrete etc; 【Good Funtions】- Small incision resistance,feature drilling stably,fast speed,not breaking the border Opening neat,smooth,no broken edges, no tremor phenomenon,chip Easily;