Unlike other clamps this novel design is bi-polar and hence gives stimulation between the ends of the clamp as opposed to between two separate clamps. This item is perfect for intense clitoral stimulation, cock stim and general purpose use. Standard 2mm pin sockets.The ElectraClamp will open up to a maximum of 45mm (1.75″”) at the ends and 50mm (2″”) between the radiused arms.