Review on Optimized Double Action Spring - Rok Hardware by Adam Taylor

We needed 3 pairs in a pinch and this seemed like the best choice - until they arrived. Pros: Any 24 inch hollow door could be supported by a pair of hinges. Price. Cons: The voltage required for each to work approximately correctly varied widely. The hinges stuck to the packaging and came loose in a few places. The cap that holds the pen in place was broken on one of them. Since I had six of these I was able to make the missing cap on the top of the hinge so I didn't have to worry about the pin coming out. The directions left a lot to be desired. They were able to do the job reasonably well, but I'm not sure I'll get them again.