Abstract: A flaring tool for flaring the outer conductors of two different sizes of coaxial cable includes a dome-shaped body and a reversible tool head. The tool head has first and second shafts and first and second flaring heads on opposite sides. Reversing the tool head exposes the shaft and flaring head for the corresponding size coaxial cable. The shafts match the inner diameter of the inner conductor of the coaxial cable to be flared. The flaring heads are shaped as half cones, which allow the outer conductor to be flared without deforming the insulation between the inner and outer conductors of the coaxial cable.