1. Compatible with for Surface Pro4/for 5/for 6/for 7 Pen and for Surface Pro Pen. Please note the pen is not included.2. High sensitivity. The pen tip can you with writing/drawing experience, and has responsiveness and sensitivity.3. The of this nib is the same as the nib compatible with for Surface.4. The fine nib slides smoothly and without scratches, which greatly reduces the friction on the screen.5. Easy to install, you can easily install this high- nib without any tools, just replace or remove it by hand.Size: about 0.67x0.07x0.07inApplicable to: for Surface Pro4/for 5/for 6/for 7 PenColour:blackMaterial:plasticPackage Contents:6 x RefillOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.