Ogee Raised Panel Router Bits with Back Cutter. Raised panels fit standard panel grooves, even when the panel thickness exceeds 5/8." As the main cutter raises the front of the panel, the back cutter mills the back to produce a standard-thickness tongue around the panel. Each tool is supplied with two different guide bearings, enabling you to stage cuts on curved edges effectively and safely. All tools have 1/2" shanks. Must be used in a table-mounted 3+ horsepower router and run at reduced speed. Multiple passes recommended. Maximum RPM 12,000.