Bosch 1/4-in Solid Carbide Upcut Spiral Router Bit in the Straight & Mortising Router Bits department at Lowes.com
Whiteside Router Bits RU2100 Standard Spiral Bit with Up Cut Solid Carbide 1/4-Inch Cutting Diameter and 1-Inch Cutting Length - Edge Treatment And Grooving Router Bits - Amazon.com
MLCS 200 Solid Carbide Spiral Upcut Bit Starter Set, 3-Piece - Up Spiral Router Bits - Amazon.com