Just to add, where the circular v grooves start the cutter plunges and leaves a slight mark because of where it starts and finishes. But you could possibly have these marks lined up in a vertical up or down position so it doesn't stand out. I did the circular design so to fit in with the classic cross hair design and the back side is recessed approximately 2mm to reduce insert plastic bulk but still has a 2mm outer rim.

All in all a little beefier than the original.