Experiment to find the conductive rubber combination that works best for you.
The coils with copper wire form to any shape you want to stay solidly in place. (They come in a U shape for you to form into a coil, etc. as your preference). It does take some effort to bend the 4mm copper wire inside.
The loops have either a cord lock or rings that allow you to tighten them to your taste. Used together, they open up possibilities for higher levels of sensational stimming. Each is monopolar, requiring pairing with another electrode or pad. The loops are available with single or double cord locks. (In the photos singles are on the left and doubles are on the right. Single cord locks put both end pieces of the loop through one hole which gives a completely surrounded, stimulation. Double cord locks use two holes so have a slight break where the plastic is between the holes.
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.
Included in this package: (all have 4mm inner diameter for banana plugs to connect to)
1 thin coil (6mm)
1 thick coil (8mm)
1 thin loop (6mm) single or double cord lock version available
1 thick loop (8mm) single o-ring or double cord lock version available