A coaxial connector includes a lip portion on one end thereof and an extension section coaxially extends from the lip portion. The extension section has a tubular portion coaxially mounted thereto and at least one protrusion extends from the outer surface of the tubular portion. A tool for disconnecting and connecting the coaxial connector includes a mounting portion for being mounted to the coaxial connector and the mounting portion has a yield slot defined therein which is located corresponding to the at least one protrusion of the coaxial connector.