Craftool� stamps are an investment that will last for years to come! Quickly create oak designs on belts, billfolds or other small projects by using our acorn and oak leaf stamps. It's fun to make nice looking designs with just a few stamps. "Tech Tips" #66056-00 by Al Stohlman, has some examples of acorn and leaf designs. Approx. stamp dimensions: 7/16x1/2.