The LENOX DIAMOND Holesaw has a robust design for greater durability in tough applications. With a long-lasting brazed diamond edge that drills more holes in even the hardest ceramic and stone materials. Its thin kerf enables fast and easy cutting. Round holes in the side of the holesaw make removing plugs faster and easier. Uses a standard or SNAP-BACK Arbor. This LENOX DIAMOND Holesaw has the following specification Diameter 76mm Fits SNAP-BACK Arbor 2L, 6L Fits Standard Arbor 2L, 3L, 6L, 7L