Harpow 3-inch Sealant Caulking Knife Cutter Auto Glass Straight Blade,power Oscillating Tool Blades,multitool Blades,power Tool Saw Blades,fits Fein Bosch Craftsman Rockwell Einhell Westfalia Ferm Pro-line Matrix Tools Removes flexible caulking from expansion joints, removes sealant from bath tiles or marble; Universal arbor designed to work with most tool manufacturers; Features a wide variety of Blades to handle your project needs; High Quality Construction for long life and durabilty; Hole Pattern: Quick fit hole.