Rannb Spring Hinge Self Opening Hinge 2" Length Stainless Steel Door Hinge - Pack of 4

Work perfectly for our chicken coop!

It works for the purpose it is intended for. The product price, is comparatively quite expensive, however this is an imported product besides I have looked around in the hardware stores across Mumbai and even in Crawford market. You don't get hinges of 1.5 with a spring. You either get 1.5 inch hinge without spring or a much bigger hinge with a spring. Neither of these suited my purpose. So I had no choice but to pay the extra buck for these. All said and done, they work as intended.

Easy to install and use. (Bought for a special-purpose project.)

Purchased for a home made squirrel feeder to hold pickle jar in place while allowing easy removal. This spring does the job.Pros:Easy to installIncludes 4 spring hingesCons:Spring action not very strongAlthough this hinge works for my application, I ended up using a bungee cord to secure jar to my feeder because squirrels kept knocking the jar out of place. The spring tension is enough to keep jar secure but not enough to hold up to the squirrels. For other applications it may be fine. Overall I’m please with the product and would recommend.

In the closed position, the leaves of the hinge are at 90 degrees to one another, i.e., one leaf attached to the inside face of the door frame, the other to the face or the door. The springs are not very powerful. That said, they worked OK for my application, but I'm going to guess most people won't be satisfied.