Midmark Digital 5-Lead IQholter Leadwire & Cable (90-30-0205) and 7-Lead (90-30-0206). Midmark lead wires are recommended for use with the Midmark IQholter® device. They are designed to provide a secure, comfortable connection from the patient to the device and are color-coded to help ensure proper placement. Priced per set. See "Options" above for Lead Selection.