A well running tool used for lowering and setting well bomb hangers and various tool string hangers in a well and then disengagement for removal from the well, leaving the hanger set in place in the well. It is a soft set running tool designed to disengage from a bomb hanger, or other well tool hanger, with an upward pulling force substantially greater than the weight of the bomb hanger or other tool hanger, being positioned in the well after the hanger is key lock set in place down the well.