1Widely Compatible: Suitable for all clip cord and cordless power supplies with RCA interface, compatible with most of the cartridge needle on the market. 2Adjustable Needle Stroke: The stroke of the needle can be adjusted by rotating the handle part of the machine, and it is equipped with 2 balls for more accurate adjustment. 3Liner And Shader: Equipped with excellent motor and gear system to ensure stable operation, can be used for liner and shader, help create beautiful tattoo pattern. 4Ergonomic Handle: Conform to ergonomic design, non slip handle, easy and comfortable to hold. The bare weight is about 146g, light weight and small, easy to carry. 5Alloy Material: Rotary tattoo pen adopts great alloy material, safe and eco friendly, firm and sturdy, stable and wear resistant, durable for use.