These 4 necklaces are cut from the same coin so they fit together like a puzzle. We also engrave names deeply into each piece. We hand cut the pieces to each have a jigsaw puzzle piece connecting to the piece next to it. Another picture shows how big an individual part is if made from a silver dollar. Four 20" thin chains will be sent with this order. However, if you would like different sizes offered below please message us immediately after ordering. We offer various chain sizes from: 18" thin 20" thin 24" thin 20" thick 24" thick Key Chain Adj Black Cord