Amana Tool MR0110 Corner Rounding with Mini 3/16 Ball Bearing Guide 3/8-Inch Diameter, 3/32-Inch Radius, 1/4-Inch Shank, Carbide Tipped Router Bit Amana Tool exclusive corner rounding miniature bit 3/32-Inch Radius, 3/8-Inch Cutting Diameter 3/8-Inch Cutting Height, 1-13/16-Inch Length 1/4-Inch Shank, 2 Flute Carbide Tipped, Industrial Quality