FESTOOL Guide Rail Adapter FS-OF 1000For OF 1010. Replacement Guide Stop for use with the OF 1010 Router and FS Guide Rail System. Maximize the versatility of your Festool Router and Guide Rail System! Use the Guide Stop to adapt the Festool OF 1010 Router for use with the FS Guide Rail System for perfectly guided, straight routing. The Guide Stop attaches quickly and easily using two rods included in the scope of delivery of the OF 1010 router. Adapt the Festool OF 1010 Router for use