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Whiteside Router Bits RD4075 Standard Spiral Bit with Down Cut Solid Carbide 3/8-Inch Cutting Diameter and 3/4-Inch Cutting Length - Down Spiral Router Bits - Amazon.com
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SpeTool Carbide Spiral Router Bits Up&Down Compression Bit 1/4 X 1 inch Cutting Size with 1/4 inch Shank for Woodwork CNC Router Bit Engraving Carving Mortise Groove Tools - - Amazon.com
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