The Slow Blatt Cast Up! ZetZ is the latest version of this famous casting jig! This model Up! it has the characteristic of having a polygonal shaped body produced with a light metal "Z" which has a lower specific weight than iron, so as to create a compact shape with low density material. The profile allows a stable flight posture with a weight balance almost positioned in the center. Its particular shape guarantees a variable movement depending on the jerkata that is impressed with the barrel.