Casing Running Tools - AutoFill™ - StabberLess AutoFill™ Casing Fill-Up and Circulating System, Fills or circulates casing as it is being run. The "STABBERLESS AUTOFILL™ SYSTEM" is designed to facilitate filling, circulating, and flow back when there is no stabber in the derrick and to reduce the time required to run casing, and allowing immediate circulation in case of well problems. The system allows the rig pumps to be used in the fill-up process while making up and running each joint of casing. This tool hangs inside the elevator to allow easy stab in operation and is widely used in the Gulf of Mexico. When using a StabberLess AutoFill™ System with no man in the derrick, the safety aspect increases greatly.