Amana Tool Aluminum Cutting CNC Spiral O Flute Solid Carbide Router Bit - Downcut, 1/16D x 1/4CH, 1/8 Shank - Edge of Arlington Saw & Tool, Inc.
SpeTool Extra Long O Flute Spiral End Mill Carbide Router Bits 1-1/2 inch Cutting Length Single Flute Upcut for Acrylic PVC MDF Aluminum Cutter: Amazon.com: Tools & Home Improvement