... upgraded hardware• Heavy-duty, carbon-steel hex screws with composite insulators• Precision-wound coils with heat-resistant, resin coil- washers• Smooth & powerful ... block of aircraft aluminum and then anodized. CDesigned for use with standard needles, tubes, grips, andpower supplies.4 After-sales ... any questions, pls feel free to contact us! latest aluminum rotary tattoo machine with best motor