The item is a sterling silver Saint Martin of Tours pendant with a 20 inch or 50.8 centimeter long silver chain. The chain will have a lobster claw catch. The pendant measures 3/4 x 1/2 inches or 1.905 x 1.27 centimeters. The back of the pendant is plain and we can engrave it for you at no charge. This item is made to order so please allow approximately 4 days before shipping. I will provide a pendant box. He is the patron saint of reformed alcoholics.