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SpeTool Single Flute (O Flute) Spiral End Mill Aluminum Cutter Carbide Router 1 inch Cutting Length with 1/4Inch Shank for Aluminum Acrylic PVC MDF Plastic: Amazon.com: Industrial & Scientific
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ONSRUD Solid Router Bit, Primary Material Application Aluminum, Spiral O- Flute Upcut, Fractional Inch - 4KPT5|63-610 - Grainger
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51475 Solid Carbide CNC Spiral 'O' Single Flute, Aluminum Cutting 3/16 Dia x 3/8 x 3/16 Shank x 1-1/2 Inch Long Up-Cut Router Bit
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