POWERTEC 110 in. Track Saw Guide Rail Kit for Makita or Festool, 2x55 Guide Rails/Protective Bag/Rail Connectors/2 Bar Clamps 71885 - The Home Depot
Why & How to Use a Circular Saw and a Guide Rail - Toolstop
Makita 6-1/2" Plunge Circular Saw, with Stackable Tool Case with bonus 55" Guide Rail, Premium Guide Rail Bag for 55" & Clamps SP6000J85E07023 - The Home Depot