Steady support in the edge area. When routing in the edge area, the router lies only half on the workpiece. This base runner gives the router a secure and stable support. Safe: High stability when working in the edge area thanks to the extra-wide contact surface. Routing in the edge area. with retaining screws. the support extension on one side of the base runner prevents the router from tipping over. cannot be used in combination with the KSF-OF 1010 chip deflector. for OF 900, OF 1000, OF 1010, OF 1010 R