The Versatile Ellopol can eliminate the need for mounting or masking samples. It is ideal for non-destructive examination of Large or Expensive Components. Polishing or Etching is easily controlled through the variable DC Power Supply, which operates at 0-6/0-60V. The procedure is very neat with only a small amount of etchant absorbed by the Cathode Tip, which works on only the area it is applied to. The System comes complete with a Power Supply or Battery Pack (for remote work), Carrying Case, Cathode, Anode, Etchant Beakers and Sheaths. 110/220V