A system for flaring an end of a fluid line includes a first and second adapter mountable on a first and second jaw of the gripping tool, respectively, and an arbor. Once mounted, the first and second adapters each have a working surface facing toward each other defining a channel half-profile. In a closed position, the working surfaces together form a channel from the half-profiles having a flare shape portion and a linear portion for receiving a fluid line in a non-slip fit. The working surface of one adapter has a U-shaped profile, and the other adapter is configured to be received therein. Each sidewall of the U-shaped profile defines a port opening into the channel. The arbor includes a die head that forms a flared end on a fluid line received in the channel as the arbor is inserted therein via the port.