Telescopic Stylus Material: Metal, Silicone, Flocking;Size Details: Before Telescoping: 15.5cm/6.1inch (.) Total Length: 55cm/21.6inch (.) Diameter: 1.3cm/0.51inch (.). 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/ / / /Interactive Whiteboards and so on.This product is ly 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 enjoy tactile pleasure and comfortable grip in daily use due to the triangular ; 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 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.