5.Suitable for traditional blackboard, electric whiteboard, it will not damage the screen. Ample space for teachers, lectures, speeches, commanders, members of explanations and so on, effectively signaling key information at the time of presentation or teaching. 4.The bright paint color looks very fashionable and atmospheric! Great as a gift for a teacher. 3.Easy to carry: 5 inches in length, can be placed in pockets, bags, drawers, etc. There is a clip on the head of the retractable pen, which can be clipped to your notebook, or jacket pocket. 2.Material: 304 Metal Stainless steel. Contraction length: 12.7CM/ 5''. Extention length: approx. 63.5CM/ 25''. 7 section extendable pointer, Durable, portable, extendable, retractable.