Trend 1/4" Straight Router Cutter 20 x 20mm | Toolstation
20mm Diamond Router Bit F Profile Position 3 - Straight Router Bits - Amazon.com
Amazon.com: Trend Craft Pro 1/2" Shank Straight Router Cutter Bit-Ref, C030DX1/2TC Diameter 20mm Cutting Length 50mm Tungsten Carbide Tipped, Shank 1/2 inch x Dia 20 mm x Cut 37 mm : Home
Festool Straight Router Bits - Lee Valley Tools
CMT 811.200.11 20mm Diameter X 3/4" Cutting Length 2-Flute S