This is a #4 Hollow Box Geometric Stamp. It is a great stamp for creating a bold geometric pattern. The impression of this stamp measures 11/16" in length. If you want to make your work have a little different look, this would be a great stamp to add to your collection. Barry King Tools have gained a reputation for making quality tools for the serious leather craftsman. Barry is a master leather stamper, so he knows how a tool should be made and you can see that in each of his tools. Using only stainless steel in the making of these tools, you will see the precision grinding in every impression you make. If you have been wanting to take your leather carving to the next level, investing in stamps made by Barry King is a great first step.