+ TOG | NC SET

I can’t tell you how many times I’ve found myself hating the centerlock, but this makes a massive difference. It’s so easy to use that I no longer worry about taking my wheels off just for cleaning, instead of limiting it to once or twice a year when servicing the brakes and the centerlock itself. Great product and absolutely worth the price.

Distinct absence of operating instructions.
Practically impossible to remove from protective case without using other tools.

I just don't know how exactly to calibrate or use it properly (or improperly). Does offset have to be reset for front and rear? Who knows...
Other than not knowing exactly how to use it, and the inability to extract it from the protective foam casing, it's an amazingly fantastic product. (I think)