Compatible: Pen Tablet Monitor XP-Pen Artist 12/12pro/13.3 pro/ 15.6 pro/22R pro/24 pro/Deco Pro S M SW WM Package Content: 20 pieces replacements nib Note: Please do NOT press the pen too hard against the tablet or abuse it, so that the nibs will last a longer time. Unless it's flattened or frayed, you don't really need to change it.