System accessory FSN 3100. The 3,100 mm FSN 3100 Professional guide rail features unique technology that enables precise cuts. The high-quality guide rail allows for accurate guidance and can be used with all compatible power tools. With the FSN VEL connector for extension, a solid connection with perfect stability between two guide rails can be quickly established. For clean cutting edges, the guide rail is equipped with easily replaceable, non-slip rubber strips and splinter protection, which also ensure absolute control during work. This guide rail delivers perfect cutting results when used with plunge and circular saws. The device is compatible with all Bosch Professional GKS G circular saw models and GKT Professional plunge saws, as well as certain GST Professional jigsaws and GOF Professional routers with an adapter. The delivery of the FSN 3100 Professional guide rail also includes a replacement T-cap made of plastic. Design: Rail technology for exact and precise guidance. Compatible with Mafell and Festool.