Book marks engraved stainless steel. These handmade engraved bookmarks are great for a group of your friends or family. They are individually, pounded out from up-cycled muffler pipe, flattened, and then cut into shapes. My wife, then engraves different sayings on each of the bookmarks. Notice how they are individual, but they still are part of the whole. This set would be a great gift for you and three of your favourite friends.