1. Putty is easily molds to any shape, so you can use it anywhere no matter what design you have.
2. Very sticky. Drill a hole anywhere on your car and mash it into the hole!
3. Tungsten is heavier than lead so it adds lots of weight in a small area
4. Child-safe; there are no toxic materials in it.
5. Saves you time because you can easily add just the right amount without breaking off weights or finding just the right size weight that you need.