Review on 4-Pack Replacement Tips for Apple Pencil - Compatible with 1st and 2nd Gen iPad Pro Pencil - Tips for 10.5 inch, 12.9 inch, and 9.7 inch iPads - Includes Non-Slip Writing Nib Protectors (4-Pack) by Bob Schultz

Fast shipping but the first tip I tried didn't work at all, the second worked intermittently and the third works pretty much like the original. (Goldilocks thing I think). I haven't tried the fourth yet. Unfortunately I figured I'd get 4 replacement nibs, no lottery to find a working nib. I need a working one, otherwise I would have already sent it back. I won't buy them again, that's for sure.