Customer satisfaction is our unceg pursuit,If you have any problems about the tattoo kit, whether how to use,or the set have any problems,please feel free to contact us. we will help you to solve your problems as soon as. The tattoo Kit contain suitcase,it have big space. It can be used for carry this tattoo kit, or you can used as a small suitcase for go out or travel, andr it can be buckled on a trolley case, which is very convenient to carry. Equipped with 4 different needles, 5PC for each,totally 20pc cartridges needles. RL3,RL5 for lining, and RM7,MI9 for shading. Easy to install, fast rebound, individual package.Semi-transparent, convenient to observe. The battery has a capacity of 1500mAH, Fully charged, Run 5 to 11 volts 5-level adjustment.Lithium battery lasts 3-6 hours depending on your voltage and motor. HAWINK rotary tattoo machine made of aluminum alloy,light and portable, easy to hold.Liner and shader All available,low vibration and high power,compatible with all cartridge needles.