Now holding Glue and Ink is easy! Keep your procedures clean and sanitary with these 100% disposable, double-well, glue/ink rings! The double well glue/ink rings are perfect for estheticians who do lash extensions or permanent makeup. Two wells making it easy to have a smaller space for glue to sit and a working well for excess glue or lashes. For permanent makeup, the double well allows you to have two shades to work with while.