Dana Cunningham Biography Dana Cunningham Music Dana Cunningham About Dana Cunningham Biography. This gerridae quick connector disconnect tool is designed for safely disconnecting fuel lines, EVAP lines and DEF fittings that require pressing tabs to disengage. Built for convienient single handed operation with spring loaded mechanisms. The tool includes small and large jaws, making it ideal for use in restricted spaces to disconnect button connectors. Additionally, it has swivel and extra long jaws for reaching into long, narrow areas. Convenient single handed operation with spring loaded mechanisms Small and large jaws, ideal for use in restricted space to disconnect button connectors Swivel and extra long jaws for long, narrow spaces