SHDIATOOL Diamond Drill Core Bit Diameter 55mm for Porcelain Tile Granite Marble Dry Drilling

1pc Vacuum Brazed Drill core bits M14 Thread Diameter 55mm Diameter 55mm, M14 connection, Total height 60MM, Diamond height 15MM Dry/wet drilling for porcelain tile, granite, marble, stone, Masonry, brick... Vacuum Brazed technology provides longer working life, Fast and smooth drilling. High diamond exposure rate provides a faster and more aggressive drilling, Minimizing any breakage and safe for operator