Welcome any Suggestions: Our focuses on providing professional office products and paying attention to user experience. Welcome to share your user experience with us. If you have any questions or are not satisfied, please let us know, and we will reply as soon as possible. Retractable Design: You will enjoy tactile pleasure and comfortable grip in daily use due to the mellow triangular barrel; Inner stainless-steel structure can be stretched to 21.6 inches(55cm) in length, for achieving remote screen control in classroom teaching, multimedia presentation and project meetings. Highly Precise Flocking Tip: Designed with high sensitivity flocking tip, our hand pointer is compatible with tablet, electric whiteboard and other touch screen devices.does better in anti-scratch protection and responsive interaction with the screen. Free your fingers and get flexible clicking and smooth writing. Universal Pointer for Touch Screens: OurTelescopic Stylus Pen has unhindered access to all capacitive touch screen devices, such as Android/ iPhone/ iPad/ Samsung/Interactive Whiteboards and so on.This product is perfectly suitable for home, household, office, school, etc. No need to prepare touch screen gloves in cold weather. Telescopic Stylus Material: Metal, Silicone, Flocking;Size Details: Before Telescoping: 15.5cm/6.1" (Approx.) Total Length: 55cm/21.6" (Approx.) Diameter: 1.3cm/0.51" (Approx.). The pointer for classroom is very suitable for teachers' teaching, conference training, speeches, lectures, museum explanations, etc.