Overall Diameter: 1-5/8"Overall Length: 3"Cutting Edge Length: 13/16"Shank: 1/2"Decorative Cut Depth: 5/16"Kerf: 1/4"Bearing Diameter: 7/8"Radius: 3/16"The Rail Bit Is Used For Doing Ogee Profile Rail Cuts For Cabinet Doors And All Varieties Of Frame-And-Panel Assemblies For Furniture And Architectural ApplicationsAdjustable Set Produces Tight Fitting Joints For Cabinet Door FramesUse #85640MC To Cut The Matching Panel InsertsReversible Assembly That Can Also Be Used To Make Stile Cut, By Order On The ArborMicrograin Carbide Tips Provide Superior Wear Resistance And Long LifeFor Use With A Router Table Only