Compatible - Only compatible with Surface Pro4 Pen Pro5 Pro6 Pro7 ProX Book Go Laptop, Note: Pen is not included.High Sensitivity - The pen tip provides you with an accurate writing/drawing experience with excellent responsiveness and sensitivity.Original Quality - The quality of this pen tip is the same as the original pen tip compatible with Surface.No Scratch - This fine rubber pen tip glides well, smooth and scratch-free, greatly reducing the friction on the screen.Easy to Install - HB 2H H pen tip included, this premium pen tip can be easily installed without any tools, just replace or remove by hand.High-quality materials, the quality is the same as the original pen tip, compatible with the surface.Writing and drawing are free and natural, greatly reducing the friction on the screen.Package Included: 2*HB Pen Tips + 2*2H Pen Tips + 2*H Pen Tips