Item Detail Table of Content Four Wheel Alignment Equipment Vehicle Inspection Systems Quick Tread Edge DOTD Sensor Item Number: HUN2035981 Supplied by HUNTER ENGINEERING COMPANY (see all) log in for dealer pricing. Description Quick Tread Edge DOTD Sensors with Retrofit Kit for installing QTEF sensors and ramps in existing QT1 flush mount frame. Warranty Call the Hunter Customer Service Department at 1-800-448-6848 for specific warranty information.