The RRP-103 part of the Roadrunner is the wellhead system. This is the wellhead equipment and components used for drilled wells in the petroleum industry. It includes components such as the wellhead cap, casing head, flange, adaptor, running tool, spools, valves, seals, and other components that help in the transport of oil and gas from the well to the surface. The RRP-103 wellhead system is also used for other industrial applications, such as water, air, and natural gas.