It's an inexpensive power supply for wide range of everyday needs. I bought it for DIY projects not related to tattoos at all. This PS unit is lightweight because it uses a switching AC-DC converter that builds around TOP223Y IC.The case is well built from iron, overall PS size is small. And this will be the best power supply for tattoo kit, the power is steady. All of the guns are very sturdy, and durable, the coils could be of better quality. It does come with everything that is promised.