This is a full-size wooden mold for a round zipper wallet. It is a jig that allows you to attach the zipper straight. *As this is an overseas product, there may be some minor splinters or chips on the corners. ★Size Height 19.5cm, Width 9cm, Thickness 1.5cm, Groove width 6mm (for size 5 metal zippers) ●Although the attachment method shown in the image is different, you can also see how to attach a round zipper using a wooden mold like this on YouTube. If you search for "How to attach a round zipper using a wooden mold," you will find videos from people who have uploaded methods for attaching zippers, so please take a look.