Description: MATERIAL: Precision Gyroscope is made of zinc alloy material, the rotor of the gyroscope is hollowed out, the surface is smooth, burr free, not easy to rust and fade. PLAYING METHOD: Put one end of the drawstring through the small hole of the central shaft, turn the base, and evenly wrap the rope around the shaft, grab the bottom with the left hand, and pull the rope with the right hand, and then it will start to rotate. You can put it on your finger or on the desktop. TEACHING TOOL: Anti Gravity Gyroscope, to attract children's attention, stimulate children's interest in physics and science, develop intelligence and finger coordination. PRESSURE RELIEF: When you're bored or stressed out, you can put the Gyroscope on your desk, fire it up, watch it, and it'll kill time and help you . GREAT GIFT: Gyroscope Toys are the perfect gift for kids on Children's Day, Christmas, Birthdays or other holidays. Specification: Material: Zinc Alloy Size Chart: 49×62mm/1.93×2.44inch Package Includes: 1x Gyroscope Toys 1x Rings 1x Rope Note: 1. This is not infant toy , please take away from kids to avoid eating. 2. Please allow slightly error due to manual measurement. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 4. Wish you a wonderful online shopping!