Festool 490249 Bearing Guide KLS-D 15,8-OFKUse with OFKC 500 Edge Router for bits 490090, 490092, 490093, 490094, 490095, 490096, 578376, 578377, 578378. This replacement ball bearing provides smooth, accurate flush trimming performance. Made from precision machined steel, it features an integrated screw that slides directly into the router bit mounted on the trim router. The bearing provides a consistent flush reference point, guiding the cut cleanly along the workpiece edge. Precision steel