This Milwaukee 2-1/2" Diamond Plus Hole Saw (49-56-5660) provides long life and faster cutting in tile, stone and glass. High grade diamonds provide maximum heat and fracture resistance for increased durability and up to ten times longer tool life. An improved braze provides superior diamond retention when cutting hard, abrasive materials. The Hole Saw has a 1/4" quick change hex shank and features a large slug ejection slot.