Features:

This hinge is popular for aluminum frames,especially on wide temples.

It is with double spring hinges and have more more than 25 KGS pulling force resistance. It could also be used on wooden glasses if your frame has one bened front or endpiece which are made together with front.

It's one great hinge if you need the spring function for your sunglasses frame but has problem on soldering .

Material: high nickel;
Size: as per drawing below;
Screws: 3.0mm,4.0mm,5.3mm,6.0mm shaft length available;

drawing:

How to install:
Firstly,please make recess on your frames,secondly push the hinge into recess,both temples and fronts, use the screws to lock them.If for wooden frames,you may need glue together.
If you are afraid the screws are not secure enough for fastenning,please consider to add these spaceres for matching use,

Order here (excluding the screws as you've chosen above):
http://www.tailiglassesparts.com/screws-buy/stainless-steel-spacers-M2.35.html;
http://www.tailiglassesparts.com/screws-buy/stainless-steel-spacers-M2.85.html;

Installing effect picture: