This router table insert plate is made of compression molded phenolic material so that wont sag even under the weight of the heaviest of routers. Designed to use Level-Loc Reducing Rings that install in seconds and lock in place flush every time. They make setup changes simple by allowing you to quickly swap inserts rings for different bit sizes. The 4-hole plate for Triton will accommodate those same routers as well as the popular PC7518 with minor changes to enlarge the mounting hole.