The Professional tattoo machine is made in advanced technology, excellent performance and very previously rare. * The tattoo machines which are made by zinc-alloy are more refined in size. And the materials of the wire cutting machines are better than the casting machines. * Constructed of brass, heat-resistant polymeric, it is far better than other material. * Tight-tolerance, low-resistance upgraded hardware * NO fake plastic screws or hardware. Versatile front and rear springs are also fully adjustable by screws.