Compatible - only compatible for 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 excellent responsiveness and sensitivity, you can write without restriction. The quality of the pen tip is as good as the original, which is compatible for 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: HB HB HB 2H 2H Applicable models: compatible for Surface Pro 4/5/6/7/Book ProX Size: 1.5*0.1*0.1cm Colour: Black Material: ABS Weight: 15g Applicable Model: Compatible For compatible with Microsoft Surfaceicrosoft Surface Pro 4 Compatible For compatible with Microsoft Surfaceicrosoft Surface Pro 5 Compatible For compatible with Microsoft Surfaceicrosoft Surface Pro 6 Compatible For compatible with Microsoft Surfaceicrosoft Surface Pro 7 Compatible For compatible with Microsoft Surfaceicrosoft Surface Pro (2017) Compatible For compatible with Microsoft Surfaceicrosoft Surface Book1/2 Compatible For compatible with Microsoft Surfaceicrosoft Surface Laptop1/2 Compatible For compatible with Microsoft Surfaceicrosoft Surface Studio Compatible For compatible with Microsoft surfaceicrosoft surface go1/2 Note: Pen is not included. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package include: Nib Tip*5