10pcs 3.175mm *2 *12mm Double Two Flute Straight Slot Cnc Router Bits For Wood Milling - Milling Cutter - AliExpress
Double Flute Straight Bit, 1/2" x 1-1/4" | Midwest Technology
Extra Long Straight Router Bit, Wolfride 1/2 Shank Double Flute Straight Router Bit Round Nose Router Bits Round Groove Router bit (3PCS) - - Amazon.com