Check the listing for details. StewMac Binding Router Bit. Condition: New. Listed at 86.39 USD. For cutting precise binding ledges with our Binding Router Bearings. Carbide-tipped for long-life sharpness. Our binding router bit has a 1/4" arbor to fit your shop router. 6-degree cutting edge downshear prevents grabbing on climb cuts, for cleaner results. The bit has an Allen screw with wrench for installing our Binding Router Bearings—choose from a wide selection of depth-of-cut sizes for practically any binding job. A special extension bushing is also supplied for routing "stairstepped" multiple binding ledges. Router bit dimensions Cutter diameter: .925" (23.50mm) Cutting height without bearing: .375" (9.52mm) Arbor shank diameter: .25" (6.35mm) Instructions included.Used for cutting precise binding ledgesBit is carbide-tipped for long-life sharpnessHas a 1/4" arbor to fit your shop routerA special extension bushing is also supplied for routing "stairstepped" multiple binding ledgesIncludes router bit, allen wrench, extension bushing and instructions