MicroBlock antimicrobial electrodes are thefirst and only electrodes on the market that reduce the risk of contamination and help prevent infection by killing disease-causing microbes and common antibiotic-resistant threats that contact the surface of the electrode.- MicroBlock Antimicrobial Electrodes, 2 Round White Cloth. 4/pk, 10 pks/bg, 1 bg/cs. US Sales only. 14-21 Days