★GREAT QUALITY - Made of 316L surgical stainless steel and medical-grade plastic.Transparent body to easy easier to observe the needle striking,needle bar design is more advanced,letting the tattoo needle contact skin without dead spaces. | ★NEEDLE STEADY - Cartridges come with close mouthed tips which can make needles strike more steady. Filling in the colors is easy,dipping the machine needles into a small pot of color or by filling color into the upper opening of the cartridge. | ★EASY TO USE - The tattoo needle cratridges are allows tattoo artists to set up tattoo needles and switch needle configuration very quickly during tattooing process. Low profile housing & better ink flow & shaped on the inside. | ★PACKAGE and SIZE - Each box of 20Pcs. Individually packed and Pre-sterilized. E.O. sterilized and packaged in blister pack.The tattoo cartridges needles have different size for you choose:RL, RS, CM(RM), M1. | ★SAFETY COMPATIBLE - Low noise when tattooing,compatible with all standard cartridge grips and machine.Safety membrane inside cartridges system, that stops ink from passing through to the tube or tattoo machine.