Compatible-only compatible with Surface Pro 7/6/5/4/Book1/2 Laptop1/2 Studio Go1/2. Highly sensitive-the tips offer you a precise writing / drawing experience. With excellent responsiveness and sensitivity, you can write without restriction. Original quality-the quality of the pen tip is as good as the original, which is compatible 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: HB HB HB 2H 2H. Without tools, the pen tips are easy to attach. Only by hand can you replace or remove the tips. Specification: Model: 2H 2H 2H 2H 2H Applicable models: for Surface Pro 4/5/6/7/Book ProX Size: 1.5*0.1*0.1cm Colour: Black Material: ABS Weight: 15g Applicable Model: For compatible with Microsoft Surfaceicrosoft Surface Pro 4 For compatible with Microsoft Surfaceicrosoft Surface Pro 5 For compatible with Microsoft Surfaceicrosoft Surface Pro 6 For compatible with Microsoft Surfaceicrosoft Surface Pro 7 For compatible with Microsoft Surfaceicrosoft Surface Pro (2017) For compatible with Microsoft Surfaceicrosoft Surface Book1/2 For compatible with Microsoft Surfaceicrosoft Surface Laptop1/2 For compatible with Microsoft Surfaceicrosoft Surface Studio For compatible with Microsoft surfaceicrosoft surface go1/2 5 X Pen Tips