WorldWide Tattoo Supply also known as TCM Supply Corp have been making needles since our door opened in 1989. You may remember our old Purple Box with the Rainbow Dragon. We use the same quality surgical steel with precision sharpening and construction to make our new line of Membrane Cartridges. Product - Round Shader Needle Cartridges with Membrane Needle Size - Standard #12 Needle Gauge/Diameter Brand - WorldWide® Sold In - Boxes of 20pcs Sterilized - EO Gas Sterile Compatibility - These cartridges are industry standard and will fit all machines and grips. These cartridges has a membrane to prevents ink spit back. The WorldWide® Needles are made with high quality steel and high quality soldering. These cartridges has a precision clear tip with double opening for visual control & perfect ink flow. These needle go through strict quality control to make sure you get a great high quality tattoo needle. Buy them in 3-Boxes and Save More.