The L-39 brass offset pivot hinge is employed when a minimum of visible hardware is desired, or when the door must swing free of its frame. It is mortised into the top and bottom of the door and frame; only the pivot is visible. The leaf measures 1-3/4" x 3/8" x 1/8". Offset pivot L-39 has a longer knuckle for wide throw conditions. The hinge is sold in pairs and installation instructions are available. Compatable with the TJ-L37 installation template.
I have been using the L39 pivot because it is the only one that I can find with the bigger offset, I wish Brusso would offer the pivot with steel centers ( instead of brass on brass) I sent my furnitures all over the world and can risk to have the pivot fusing together.To prevent galling I go the extra mile and silver solder new steel centers .
Beautifully machined hinge and the template work nicely for routing. They are installed on a sideboard where I wanted a clean inset door. I wouldn’t recommend using the brass screws. They are too small for such soft metal and aren’t likely to hold. They can easily break off when installing. For cabinetry doors use steel screws.
"Buy the best and hope it's good enough" is what an old German cabinetmaker told me when I was starting out 35 years ago. Brusso hinges are the best. I think they indicate quality.