1/8" x 5/16" Top Bearing Slot Cutter Router Bit - 1/2" Shank - Yonico 14914 | eBay
Bosch 1/8-in 3-Wing Slot Cutter in the Slotting Cutters department at Lowes.com
EZ DIAL SLOT CUTTER ROUTER BITS – Woodline USA
Yakamoz 1/2 Inch Shank Adjustable 3 Wing Slot Cutter Router Bit Set with 6-Picecs Slotting Cutters | 1/2 Inch Cutting Depth & 6 Different Cutting Widths - - Amazon.com
6 Piece Slot Cutter 3 Wing Router Bit Set - 1/2" & 1/4" Shank -Yonico 14700 - Walmart.com