Features： 1、Wide Range Of Applications: The tattoo needle holder can be matched with the mainstream 8mm steel tube or plastic tube tattoo handle, suitable for ordinary tattoo long needles or tattoo cartridge needles. 2、Easy Installation: The recommended tattoo needle models are 1RL, 3RL, 5RL, 7RL, 9RL. Custom nut design for easy disassembly and assembly, considerate and reliable. 3、Needle Fixing: for tattoo needle fixation, convenient for tattoo artists to create exquisite tattoo patterns. Important accessory for manual tattoo pen. 4、Portable Design: Light weight and in small size, it doesn't take up much space, can be put into a tool bag or pocket, suitable for home and tattoo salon. 5、Aluminum Alloy Material: Cartridge needle holder is made of aluminum alloy material, firm and sturdy, anti rust and stable, wear resistant and durable for use. Specification： Item Type: Tattoo Needle Holder Material: Aluminum Alloy Size: Length: Approx. 4.6cm / 1.81in Lower Diameter: Approx. 1.9cm / 0.75in Upper Diameter: Approx. 1.6cm / 0.63in Use: Tattoo Characteristics: Simple design, compact and lightweight, quick installation Applicable Tattoo Needles: Traditional common tattoo long needles, cartridge needles Package List： 1 x Tattoo Needle Holder