Compatibility: Design for marker/marker plus/ and Wear-: Use customized composite materials, with anti-wear testing in several months, to make sure pen nibs meet the wear- standard, that can be used for longer time Precise Control: Fine point design allows for precise and accurate note-taking and drawing, making you feel like writing on a real paper,more convenient for note-taking and sketch Easily Install: Easily replace the pen tips by following the same straightforward procedure as the original , and no additional installation steps required. Please that the pen tip is inserted into the correct position Precision & Paper-Feel Writing: Our for 2 tips are engineered to provide a genuine paper-like texture, can write and draw with extreme precision and control, delivering excellent writing and graphical output Color: black Material: plastic Package Contents: 20 x Pen Tips 1 x Reamove Tool 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.