I used this in a DIY bass build. Because it fits in a simple straight channel it is one of the simplest types of rod to fit, making it a good choice for amateur builders like myself. It is quite small in section, which would allow for a slim neck if desired. It does require some care to keep glue out of the exposed screw threads when installing the fingerboard, and it might be a good idea to apply some lubricant to the threads before installing. The adjusting nut is plain steel rather than plated. This is not a problem in use, but I prefer to use a cover over the adjustment cavity rather than leaving it on view. It is a dual action rod which could be used to add relief as well as to reduce it. In practice, I have never needed to add relief to a neck, but it is reassuring to have that capability.
I've used this item dozens of times... never had troubles. Easy to install and sturdy. Would be nicer if finished with something that could contrast rust but at this price absolutely nothing bad can be said!