I got these for a recent eyebrow piercing in case anything ever went wrong with my starter stud. I am very thankful I got these because while switching out a retainer I lost a ball on my starter stud. Luckily the balls of these works great with the stud I got from the parlor.

The only thing I don't like is the ball comes off on both sides. It is also a pain in the behind getting the balls back on once the bar is actually in your skin. I would definitely recommend these to others, just be prepared to fiddle with small parts, and for the sake of all that is good put something in the sink drain before you go to switch them in front of the bathroom mirror.