Home » Motion Control Catalog » Triad Preamp Electrode (Single) – Long Triad Preamp Electrode (Single) – Long Add to InquiryClick to add this item to cart. PART #: 2000168 Product Description Long Electrode Disk for Triad Preamps. (Single) See also different: Triad Preamp Electrode Set (6) – Short PART #: 3010836 Triad Preamp Electrode Set (6) – Long PART #: 3010834 Triad Preamp Electrode (Single) – Medium PART #: 2000169 << return to products