Amana Tool 45481 Flush Trim/Pattern Plunge 1/2-Inch Diameter by 3/8-Inch Cutting Height by 1/4-Inch Shank Carbide Tipped Router Bit 1/2-inch cutting diameter 3/8-inch cutting height 2-1/4-inch length 1/4-inch shank, 2 flute Carbide tipped, industrial quality