The Goki knocking woodpecker on a metal rod combines physics with visual delight. With a simple push, the wooden woodpecker figure slides down the rod while performing rhythmic knocking movements. This classic mechanism vividly demonstrates the physical principle of static and kinetic friction. The decorative model consists of a stable wooden base, a slender metal rod, and a lovingly designed woodpecker figure with pink feather decoration. It is ideally suited as an educational demonstration object or as a decorative eye-catcher in living and working areas.