Rabbeting router bits are cutting tools used in woodworking to create recesses or grooves, known as rabbets, in a workpiece. These bits feature a cutting edge that extends beyond the diameter, allowing them to remove material to a specific depth and width. They are commonly used in cabinetmaking and furniture making to create strong and flush joints between different pieces. Rabbeting router bits come in various sizes and can be used with handheld routers or router tables. They are essential tools for achieving precise and professional rabbet joints, adding both functionality and aesthetics to woodworking projects.