If you need it, it works well!
Monday, 4 March 2019 | Cathal
I needed this to balance a triplet Apo on my AVX mount, and it just works. It's the same as the as-supplied item, works the exact same way, has the countersink for the toe protector at the end of the counterweight bar, and the weight tightens correctly onto the bar and does not slip.
It's certainly better than trying to add weight by any other method!