Elongated side rails for attachment to a sidewall of a truck cargo box as a portion of a tonneau cover assembly. The RF coupling coil supplies electrical power to the therapeutic transducer. The signal strength of the generated pulse signal is multiplied by the number of staged valves in the series, and the pulse generation assembly of the disclosure is less susceptible to jamming, shock, and erosion. Each seat portion is contoured downwardly forming a seat depression. The system and method enable direct transfer of materials from a first tool to a second tool or transfer of materials from a first tool to a temporary storage location when a second tool is unavailable.