Carbonflex Electrodes Silicone Insulated Diam 4 Blk Orthopedic Care * Supports Up To 200 Instrument and Solution Stands * Supports Up To 200 lbs The contoured design combined with the simple operation of the ISOFLO© Memory Control unit offers provides a new level of postural control and stability that has never been achieved in an air cushion 4 Round Black * Note: The hard rubber electrodes are now softer silicone electrodes * The new silicone electrodes are of the same high quality and have very low resistance and they are more suited to the body * Uniform conductivity conserves energy and improves performance of equipment