Sponge Pocket - 2.4" x 3.1" pk of 4

Sponge Pocket - 2.4" x 3.1" pk of 4. For use with IFC electrodes 3"x4" or smaller. Replace every 90 - 180 days. Keep moist at all times in a mild solution of Bicarbonate of Soda. Most effective application of IFC with carbon rubber electrodes.