The black obsidian septum tusk is made by Oracle Body Jewelry. Available in size 00g only.
10g is about 1-3/4" long
8g is about 1-3/4" long
6g is about 1-5/8" long
4g is about 1-7/8" long
2g is about 2-1/16" long
0g is about 2-1/4" long
00g is about 2-3/8" long