Non-toxic and durable: these ABS plastic pens come with a magnetic tip that works well to bring the magnetic balls to the surface. They are safe to use. Thanks to the screw attachment, they are robust and not easy to break Portable design: each pen is approx. 10cm long, lightweight and convenient to take with you whether you are traveling or enjoying outdoor picnics. So you can enjoy the fun of a magnetic drawing board if you want Easy to use: boys and girls can use the pen to write letters from a to z and numbers from 0 to 9, then press the magnetic balls down with your finger or pen. It would be a great pleasure to push the magnetic balls downwards Sufficient quantity: the package contains 3 pieces of replacement pens in yellow, enough quantity to use and replace. It even offers the opportunity to play the magnetic drawing board with friends. Drawing boards are not included Stimulate creativity: nice gifts for boys and girls for Christmas and birthday. The satisfactory "click" sound can attract the attention of boys and girls and help them turn off smartphones, keep away from TV and computers, and improve their creativity and eye coordination ability