A brazed and blackened steel frame, with six wrap 22 AWG, hand wound coils with 1.25”x3/8” steel cores, wrapped with red prism tape, a 22 μF capacitor, and 18 gauge front and rear springs. This is a pre-tuned liner that is set up to run at a speed of 120cps, at 7 volts. This a powerful smooth running liner that has no problem pushing large and small needle groupings. If you are looking for a machine similar to this one, but have different set up and tuning specifications, you can place a custom order by navigating to the custom build section of this website and have one built for your particular needs.