I decided to get a set of these electrodes on a whim, and I am delighted that I did so. Their small size makes them ideal for use on my perineum and also my partner's penis; it fits on his glans perfectly.
Taking a regular cable with 2mm plugs, it means I can use one of these electrodes with a standard-sized one. The glue holds them in place well, and I love the intense feelings that they generate.
Don't bother trimming down electrodes get these ones made for the job, and I love them.