4Pcs Pattern Flush Trim Router Bit Set 1/4 inch Shank Template Router Bits 1/2 inch Cutting Dia Woodworking Router Tool by CHoiKWong (1/2 inch Cutting Diameter, yellow) - - Amazon.com
SpeTool 7/8 Dia 1/2" SHK Compression Flush Trim Top Bearing Router Bit
Flush Trim-Plunge Router Bit | 3/4 Dia x 1-1/4 x 1/2 Inch Shank