San Dynasty Cartridges, specifically the Dynasty Membrane Tattoo Needle Cartridges by Needlejig Tattoo Supply, are a type of tattoo needle cartridge known for their safety features and quality construction. They utilize a membrane to prevent ink backflow and feature clear cartridge bodies for easy cleaning visibility. These cartridges are available in various configurations, including liners, shaders and magnums with different needle sizes (#08, #10, and #12) and tapers.