Treatment Modalities - SMART Tools, STM4 Scanner : The Scanner tool by SMART Tools is designed with the patient in mind by providing them with instant muscle relief, improved flexibility and faster recovery. Much like its STM2 counterpart, it is ideal for use on smaller to medium sized areas of the body such as the back, forearms, neck, calves, and pectoral muscles. Its single beveled edge allows for greater sensitivity and feedback when scanning tissue, which some practitioners prefer. It is made of a durable and premium medical-grade stainless steel. The reduced friction allows for support of sensitive skin. Making this an effective treatment tool for soft tissue and scarring brought on by surgeries, injuries, and overuse of muscles.