Just got mine today, fits perfectly one the Joe Jr.
Two of three of the lower legs on my OEM unit fell off and it was not possible to hold the ceramic plate anymore. It was always kind of a junky, fiddly arrangement.
This is a much better design and excellently crafted with nice TIG welds. Perfect fit and plate positioning and now can remove and install the whole assembly intact with two fingers. Price was reasonable and fast, intact UPS delivery. KJ really could have done a much better job with the original. Great job on this badly needed accessory!
Highly recommend!