The item is a sterling silver Saint Peregrine medal with a 18 inch or 45.72 centimeter long silver curb chain. The chain will have a spring ring catch. The item is made to order so I can attach any style or length chain you would like. The medal measures about 3/4 of a inch wide or 18 millimeters. The back of the pendant is plain and we can engrave it at no charge. The front of the pendant says Saint Peregrine Pray For Us. He is the patron saint of cancer patients. I will provide a nice pendant box.