This is my first nose bone after wearing L shape studs for a year. Easy to put in and perfect length. No issues with it falling out even though I'd previously had in a larger gauge. I picked the button which is a disk with a flat back. I'd say it measures 2mm, a perfect size. Rose gold kept my piercing irritated but this steel stud has caused zero irritation. If you've never tried a nose bone, this is a great one to try!