Jet, Small Grizzly, Powermatic 64 Table Saw Zero Clearance Insert by Peachtree Woodworking PW956 The insert is blank so you can custom fit the blade slot for standard Kerf, Thin Kerf or Dado blades Helps to prevent tear-out and closes the large factory gap between blade and insert. Insert comes with leveling screws and rear safety pin 12-1/2" x 3-1/2" x 7/16" thick - Made of UHMW Please check your Length,Width and Thickness of your current insert before ordering