Come and see our amazing products. Quality material: Our spinning tops made of adopt quality metal, which is firm and wear-resistant, safe, and has a long service life; Measurement: each spinning top measures approx. 3.4 x 3.5 cm/ 1.33 x 1.38 inches, 0.04kg in weight, which is easy to hold and spin.Educational meaning: put the Tippe top on a smooth plane, and hold the handle to rotate, then the gyro will suddenly stand up, which is full of the physical mystery of the artifact, making you enjoy the fun at the same time increasing the desire to learn. You can play the tops with friends, classmates and so on, or parents, boys and girls also can play them together to enhance relationship, having a nice leisure time. Pls confirm further with us if any query about packing info, inventory status and time schedule.