This router plate is awesome, far more than I expected.  The router base plate has all the insert rings attached, they are stable and easy to configure, there are adjustment screws to level the plate and unique locking tabs in the corners. It looks serious and I love owning it. I have installed it, used it and am proud of it. I got 2 of them.  I am learning the Bob Rosendahl method ( PBS tv ) This plate is not screwed to the table top, it lifts out for bit changes and height adjustments. I can't compare it with other plates, I have always made my own from Lexan,  I ran out of Lexan, did not buy any more, it is too expensive. If a woodworker at any level needs a decent router plate, try the Roussea.