Based on this product's specifications, here are some alternatives and similar models
Guide rail KWB 784400 for KWB tools — compatible replacement rail
Summary description:
Guide rail KWB 784400 is a replacement guide rail compatible with KWB tools. Designed to provide a straight and stable guide for cutting or routing applications, it fits tools that accept this KWB-compatible rail type. Useful for achieving accurate cuts, repeatable guidance and improved control during woodworking or renovation tasks.