Telescopic Stylus Material: Metal, Silicone, Flocking;Size Details: Before Telescoping: 15.5cm/6.1inch (Approx.) Total Length: 55cm/21.6inch (Approx.) Diameter: 1.3cm/0.51inch (Approx.). The pointer for classroom is very suitable for teachers' teaching, conference training, speeches, lectures, museum explanations, etc. 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. 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. 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. Colour:Black Material:plastic+metal Package Contents: 4 x Stylus Pen