Highly conductive, these are adjustable to allow tightening to your personal preference. Just push on the button of the cord lock, tighten and release. The inner diameter is 3.75mm so any banana plug will fit snugly.
The tubing is 6mm or 8mm diameter. These are genius in that they can be used either as unipolar or bipolar. For bipolar, plug one banana of your leadwire into each side. For unipolar, use one of our Y cables.
Be sure to use water-based lubricant such as Spectragel to keep the sensations smooth and avoid hot spots. Never use any lube with silicone of any kind- it weakens and degrades the rubber.
Order one, a pair, or a variety with one of each.