The Bosch GKSRPG is a rip fence for the GKS18V-25C and GKS18V-25GC blade right circular saws, helping to make repetitive, accurate rip cuts. It also eliminates the user's need to measure and mark the workpiece before each cut. This guide helps keep the saw in line, to make parallel rip cuts easier. It installs quickly and easily. The attachment's steel construction is designed for long life.