Gauge Sizes range from 20g to 00g in size charts, with 20g becoming the smallest gauge size, and 00g getting the largest size in the Gauge Size Scale. Locations for piercings apart from the earlobe include things like the rook, tragus, and across the helix (see picture from the infobox). https://followbookmarks.com/story18726062/a-secret-weapon-for-kitty-earring