1.Place it on table or desk, and witness the beauty of gravity and momentum at work Sand included. 2.The magic of the sand pendulum has been studied for centuries and now you can bring this unique wooden accent to your desktop. 3.Start this pendulum gently swinging, and watch the path the pendulum takes through the sand, swinging slowly back and forth into beautiful elliptical loops and whorls. 4.Different start angles provide different patterns, witness the beauty of gravity and momentum at work. 5.Suitable for 0ffice, den, living room, bedroom, desktop furnishing articles household act the role ofing is tasted. Description: 1.Non-toxic, no smell, no fading, environmental protection and safety, workmanship is light. 2.When science and art are combined, beautiful things are created. Product Name: Gravity Sand Pendulum Sand Table Material: Metal+Plastic+Sand Color: Black Size: 140x390mm/5.51x15.35in Package Informations: Package Size: 250x200x100mm/9.84x7.87x3.94in Package Weight: 690g/1.52lb General Package Package Included: 1 x Gravity Sand Pendulum Sand Table 1 x Bag of Sand Notes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.