Rimba electro play aluminum penis ring set icontaining 3 different rings and a leadwire with banana plugs. each ring in uni-polar and has a socket to conect a banana plug. because an individual ring is unipolair you need to use 2 pieces at one time or use an other uni-polar electrode with a banana plug. (ref. # 7861, 7894 or 7895). if 2 uni-polar electrodes are touching the human boday at the same time, an electrical shock can be applied. always be careful, do not use if skin is broken or iritated, when you have heart problems or are pregnant. tip: use rimba contact gel ref # 3000 to experience the best results.this rimba elecro sex ring cable has a 2,5 mm jack plug that connects directly to all rimba power box devices, ref. 7850, 7880 and 7890.