Cleo body electrode pads can be used with a CLEO II or Cleo Q for all body programs; the pads are large & square with a tab connector, so can only be used with body leads. Cleo body pads contain 20 pads per pack & can be purchased in quantities of 1 or 2 packs - the more you buy, the less you pay per pack. Cleo neck pads are also square, but smaller in size & have a press-stud connector, the same as face pads; they can be used with CLEO I, CLEO II & Cleo Q & come in packs of 4, to purchase in 5 sets of 10 sets.