-only with Surface Pro 4 Pen Pro 5 Pro 6 Pro 7 ProX Book Go, etc.Highly sensitive-the tips offer you a precise writing / drawing experience. With responsiveness and sensitivity, you can write without restriction.quality-the quality of the pen tip is as good as the , which is with surface.No scratches: the fine rubber tip is clean and smooth. No scratches, friction on the screen is also greatly reduced.Easy installation-they are: 2H 2H. Without , the pen tips are easy to attach. Only by hand can you replace or remove the tips.: 2H 2HApplicable models: for Surface Pro 4/5/6/7/Book ProXSize: 1.5x0.1x0.1cmWeight: 15gApplicable :For Pro 4For Pro 5For Pro 6For Pro 7For Pro (2017)For Book1/2For Laptop1/2For StudioFor go1/2Colour:blackMaterial:ABSPackage Contents:5 x Stylus Pen TipOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.