Coils entirely manufactured in our workshop with reeled copper wire  (OFC) on bakelite spools (the best material for  this kind of application). This way of making let the coils to work at low voltage, preventing them to heat up. The quality of the materials give to these coils high efficiency and a guaranteed long life. Each pair of coils is sold pre-wired with capacitor, complete with mounting screws and washers, ready to be installed on your tattoo machine.