Freud Drainboard Router Bit 85 052 1 2 Inch Shank 1 8 Radius (5 8 Dia 1 2 Carbide Height Non Marring Bearing Solid Surface Countertop Water Runoff) Corded Tools Wet Only Coolant Circulation: Formulated for Wet Only Coolant Circulation: Formulated for continuous water flow to flush slurry chatter free hole starting The 5 8 inch overall diameter cutter provides a 1 2 inch carbide cutting height with a 1 8 inch radius and incorporates a non marring synthetic guide bearing to ride along templates without scratching or thermally scarring polished countertop surfaces Heavy Duty Steel Shank: Rigid 1 2 inch shank prevents tool deflection to preserve uniform groove depth across long runouts