Pack of 3 60 Grits 4-1/2" 4.5 inch Diamond Circular Saw Blade for Rockwell Compact Rk3441k, Worx WX429L Tile Grout Concrete, Pack of 3 4-/1/2" 60 Grits Diamond Circular Saw Blade for Rockwell, Worx Use for Stone , masonry , tile Material HSS High Speed Steel Fits with Rockwell/ Worx 4/1/2" Arbor size:3/8"