TamBee Pivot Hinge Hidden Door Hinge for Secret Door Secret Door Hinges Pivot Hinges for Doors Heavy Duty Bookself Hinge 304 Stainless Steel 360 Degree Rotation

This hinge works great for my purpose, seems well built. If you don’t have a good understanding of fitting doors this may be a tough install for some as no instructions came with it.

Very sturdy. All stainless steel. Used to build a hidden bookcase door

I was really impressed with the quality of this excellent product! I ended up returning it because it wasn't a good match for my specific situation given the complexity of installing the upper piece of the hinge. (I am dealing with concrete basement walls) To install it, you will need to make some pretty deep and specific routes to recess the upper mechanism while still having some material for the plate to screw into. If I were to use this hinge, I would make a template first on some scrap material.

Purchased 2 sets of the offset hinges & used on large 50lb doors. They work great. BUT...On both sets the predrilled screw holes on pieces 1 & 2 for adjusting door do not lineup . When letting out the screw it actually pushed the two top pieces apart. Had to bore out the screw hole in that super hard metal. Not an easy task. PLUS... If you're not a handy person, the instructions are not user friendly.

Used this for a bookshelf door under my stairs. This was significantly cheaper than some of the other heavy duty shelf hinges. I took a chance because other reviews were decent, and I figured I could change it out later if I needed to. Installation is not any harder than any other custom woodworking project, but it could be difficult if you're less experienced. It takes a lot of patience and measuring. It seems to hold the bookshelf door pretty well so far. Time will tell if there's any wear or sagging down the road. To me it was worth the savings of $30-40 vs. $150.