It is about 1/2-3/4 wide? It is made of brass, bronze, and silver I think?? It folds out and slides with a point but will not fold more than 90 degrees back. It has very intricate engraving of what looks like leaves on a vine or not sure?? I have heard guesses of: Divider, Letter opener, Medical device, Scaring tool, horse saddle tool, ect??Listed item in stock always! Item must be in original packaging and in same condition as received. If item has been installed, used or any part missing we CANNOT accept return. HAVE ANY DOUBTS CHECK OUR FEEDBACK!!