Because of the nature of 3d printing, the material may feel a little rough to the touch. They come out mostly smooth with a slightly rough texture, so i would not suggest putting these into any new or healing piercing. I have had my ears pierced for years now and have been at this gauge for just over a year, and they feel fine in my ears, even keeping them in all day. The pictures include 3 different sizes; this model is 00g and is too big for my ears. I'm wearing the smallest version in my ears, and all the detail still comes out perfectly when printed.
This prints 1 model, to get 2 you need to print 2.