This magnetic building set is a safe and fun solution to help broaden the imagination of kids of all ages. Explore the power of magnets, develop their talent and stimulate their interest in science. There is a steel bar molded inside the magnetic sticks, which greatly increases the magnetic strength, making the sticks very strong. This is one of the major advantages of our products comparing to other cheaper items. 96 magnet sticks and 60 steel balls are included in this magnetic building set. The length of the sticks is 2.26 inch long and the diameter is about 1/4 inch. The diameter of the sphere is 0.5 inch. You can build vehicles, houses, geometry shapes, physics and molecule models <BR><BR> Note : <BR>1.There are 18 pieces extra included for free. Total is 126 pieces. <BR>2. We do our best to get your positive reviews. We love to hear from our customers. Should you have any issues or questions about your order, please contact us before leaving any negative comments or feedback.