Designed to enable virtually any router to cut ellipses & circles. Used for corner tables, arches, desks & mirrors. Setting-up & operating is simple & effective, as proven by existing industrial users. A connector plate on the end of the bar fits directly onto the fence rods of Trend routers. For the fixing of other makes of routers, an accessory adaptor base plate is required. By using one slide, the jig can be adapted for cutting circles. With additional extension bars, larger ellipses & circles can be cut.