Device and method for harvesting and implanting hair follicular units is provided. A combined harvesting and implanting tool or tool assembly provides a harvesting cannula portion detachably coupled to an implanting cannula portion. The harvesting and implanting cannula portions may be coupled by a connector that could be designed to allow for multiple uses of the tool assembly, or alternatively may be designed for single use and rendered non-functional when the implanting cannula portion of the tool is separated from the harvesting cannula portion of the tool.
