A set of five silver-chloride Gereonics sensors/electrodes for one or two channel use.  These are high quality, multiple-use sensors, but they are very sensitive so you must be careful in their use (they come with care instructions).

In each set are five sensors which can be applied to scalp, mastoid or earlobes

The cable colours are black, white, red, green and yellow and are 48″ or 120cm long

Silver Chloride sensors are recommended for SubHz or Infra-slow neurofeedback training