CMT 880.503.11 Solid Surface Rounding Over Bit W/Bearing, 1-1/4-Inch Diameter, 1/2-Inch Shank 9/16-Inch Cutting Length, 3/8-Inch Radius, 2-25/64-Inch Overall Length. Creates a traditional roundover edge on solid surface countertops. Delrin Bearing to protect your surfaces. 2 Hi-Density carbide-tipped cutting edges for long-lasting performance. PTFE Coating to protect bit against resin and pitch build-ups.