100mm x 25mm OD x 12mm ID

This amazing new tri-polar probe can be used for a mind blowing variety of stimulation. The probe has three contacts/cables instead of the usual two so as to allow different connection permutations. Stimulate between the top two domes, the bottom two domes or the top and bottom domes by simply swapping the connections around. There are so many options with this excellent probe you will spend hours discovering its pleasures.