CMT 299.101.00 2 pcs of Saw Blades Stabilizers, 3-Inch Diameter with 5/8-Inch Bore 3-Inch Diameter, 5/8-Inch Bore, suitable for 8-Inch saw blades. 2 stabilizers that virtually eliminates rim vibration to make cleaner, straighter cuts. They also reduce noise caused by vibrations and extend your saw blade life. To be used on stationary saws only.