This is a round liner from "OZER G TATTOO CARTRIDGES" that comes with a rubber finger ledge. This has a thickness of 0.35mm (#12), a long taper of 6.5mm at the tip, and you can choose from 3/5/7/9/11/14.
In response to the need to operate the machine by holding the cartridge, a rubber grip (finger ledge) is attached to the cartridge itself.
