Pulled from the OEM Microsoft Surface Stylus for Surface Book, Surface PRO 4, Surface PRO 5 (2017), and Surface PRO 6.

Very good condition, never used just the back of plastic cover has some sort of sticker/Removed. 

Surface Pen Tip Kit (Style:  H, HB, B, 2H) - RJ3-00001

Stay with the medium tip with the familiarity of a #2 pencil, or swap it with a low friction tip similar to a fine point pen. Choose from one of 4 tips in our Surface Pen Tip Kit. The Surface Pen Tip Kit is included with a purchase of Surface Pen, or you can buy it separately to have extra tips on hand.
• Choose from one of four tips in Surface Pen Tip Kit. The Pen Tip Kit is included with a purchase of Surface Pen, or you can buy it separately to have extra tips on hand.
• Compatible with Surface Book, Surface Pro 4
• Compatibility: Works with Surface Pen with single side button.  
• Dimensions (L/W/H): 1.65 x 0.87 x 0.31 in (41.81 x 22 x 8 mm)  
• Weight: 0.01 lbs (5g)

Pen Tip Kit (4 tips: 2H, H, HB, B)