Abstract: The pliers form a cable wire testing tool. At the front end of a working portion (11a), a blade-type piercing member (18) is adapted to leave, in closed condition of the pliers, a free space relative to a surface of the other leg (12) serving as an abutment (17). In use, a cable wire is placed between the working portion (11a, 12a) of the pliers. Upon compressing the legs, the piercing member (18) penetrates the cable sheathing to establish with its point the electric contact between the cable core and the pliers' leg (11) which is provided with a connecting member (20) for the connection of a test cable (22). Due to the cable wire testing pliers, the customary stripping and securing of terminals may be avoided for testing cable wires.