Used these to pierce my nipples and I have no complaints! You can tell they are sturdy and will hold up for the job. Ignore my struggling in the video lol but I locked these forceps on the first, loosest lock and it’s extremely tight. Don’t know why anyone would need it tighter than the first lock, but as for the serrated edges, I used the first lock on my nipples with no bruising or cuts from the serration! Be sure to buy the slotted version for piercings (my mistake) as I forgot and had to awkwardly remove the forceps right after piercing.