1. High Quality: Newtons cradle is made of a metal bracket and metal balls, solid wood made base, and high-quality fishing line, the whole weight of 1KG, quality, sturdy and durable.2. Nice Decoration: The newton's cradle uses black and silver as the color scheme, high-end, classic, but not outdated. It makes a great present for decorating the room. Show some character and express your love for science and physics with this decorating space. Whether in the living room, bedroom, study, or office, newtons cradle pendulum will grace your desk, bookshelf and shelf.3. Multiple Uses: Newtons cradle balance balls is not just a toy and decoration for your desk, it is also suitable for science or physics classrooms to show students about the conservation of momentum and energy. Newton's pendulum is an effective way to relax your mind when you feel tired at working or studying. Meanwhile, it can also be used as a tool in psychology and can be used for meditation.4. Cool Desk Gadgets: When you're tired of working or studying and want to take a break, touch the ball, the pendulum balls will start to click and emit a rhythmic and relaxing ticking sound. The newtons cradle pendulum balls will continue to move for 10 seconds. Each time you grab different number of small balls to put down, the Newton balls will pose a different curve of beautiful movement. What a wonderful little toy.5. Great Gift: Whether you want to find a decoration for your desk, relax between work and study, let your kids experience the fun of this traditional toy and learn physics and science, or just want to relive the fun of playing Newton ball in childhood. This newton's cradle toy is a very good choice. The high quality newtons cradle can be given as a gift to kids and adults for Mother's Day, Father's Day, birthday, housewarming, graduation, and Christmas.6. Please follow the steps in the image to set up the ball rack to prevent the ball from getting tangled and to clean the dust from the ball to ensure a longer swing time.