SHIPS THE SAME DAY with FAST FIRST CLASS USPS SHIPPING !!! TOTAL 12 PS  = 8 PS in PACK + 4 PS FREE    NONE LATEX, RUBBER, CARBON, MULTI-USE ELECTRODES  Comparable with Hill Laboratories HILL IFC Interferential Electrotherapy Unit - 2.5" X 3.5" RECTANGLE, BLACK - NONE LATEX - RUBBER - Non-adhesive - WASHABLE & RE-USABLE  - Highly flexible with uniform conductivity over the electrode surface - Backing keeps straps clean and provides extra durability - Slightly pliable which helps them conform to the body for maximum treatment area - Used with standard pin tip connector (0.08 tip pin) - Soft and pliable to conform to the body - Great Conductivity - Conductive spray or water is highly recommended for longer reusability & better conductivity