Its a very fun decompression toy a ball can be used to other balls to beat up and swinging. Demon Striert not only a pendulum, but also shows the king of for maintenance of momentum and energy. Verv Ollk you Ommnen for the decorative element in the office, or around the home and in other interior areas. Made of steel, light, preservative and not easy to rust, can be a fun gift to your friends, family and to children. Can be a fun gift to your friends, family and children. Colour: Red Material: ABS + steel Ball diameter: 1 cm/0.39 inch (approx.) Ball Quantity: 5 small balls Packaging: Cardboard Box Size: (L) x (W) x (H) 90*75*95mm