1The length of the tattoo needle is adjustable according to the needs.(adjustment range: 1mm-5mm) 2Can easily realize the multi-function of one machine and multi-purpose for one machine. 3Made of quality material, which is anti-rust, durable and lightweight. 4It can be easily adjusted with a wrench, which is simple, fast, efficient and high cost performance. 5Suitable for all tattoo direct drive motor machines.