DTOWER 8mm/0.31inch Flat-Bottomed Arc Router Bit Multifunctional Shank Router Keyhole Bit Set Woodworking Milling Cutting Tool Shank Cutting Dia for Woodworking Carving Shaping - Walmart.com
Irwin Tools 1901032 Marples Round Nose Router Bit with 1/2" Diameter, 1/4" Shank - Amazon.com