(Keys Style Tattoo Machine)..... Information for Professionals and Serious Tattoo Artist..... Test of Performance with Eikon Meter EMS200 (With Tube-Line Bar-Rubber Band etc)..... Speed = 125Hz..... Follow Through = 0..... Duty Cycle= 50%..... Volts= 5.5..... Very Vintage Look..... It is a Great Machine for Professionals and Collectors..... The machine is set as a liner..... This machines have have a real lifetime guaranty (not springs)..... TECHNICAL DATA:..... 8 WRAP COILS -height 25Milimeters (1 inch) Core diammeter 9milimeters 0.35 inch..... 47uf x 63volts capacitor..... weight (181gr)..... Terminals are soldered with silver for a best performance..... Iron frame with Renaissance Wax Finish