Amana 51475 O-Flute for Aluminum 3/16" x 3/8" x 1/4" Shank: Whiteside Router Bits, Byrd Shelix Heads and Other Woodworking Tooling
Amana Tool - 51522 Solid Carbide Aluminum Cutting Flush Trim Spiral Down-Cut 1/4 Dia x 1/2 - Trim Router Bits - Amazon.com
Amana Aluminum Cutters – Techno CNC Shop
Router Bits for Aluminum: Non-Ferrous Metal Cutting Router Bit Selection
Amana Tool 51373 SC Spiral O Single Flute, Aluminum Cutting 1/8 D x 5/16 CH x 1/4 SHK x 1-1/2 Inch Long Up-Cut Router Bit with Mirror Finish - - Amazon.com