[질문] 피어싱종류가 몇미리씩이에요?

두께별로는0.8/1.0/1.3/1.6/2.1/2.6/3.3/4.1/5.2/6.5/8.3/9.3mm 길이별로는6.4/8/9.5/11/12.7/14/16/19/22/25mm 볼지름별로는3/4/4.8/5.6/6.4/8/9.5mm