The Tweco 4mpc connectors come with 1 male and 1 female and feature a positive cam action locking design. The black cover is heat and oil resistant and the ball point cable connection accepts 3/0 (3-ott) through 4/0 (4-ott) cable. The connectors are rated at 500A @ 80 Volts.
The 1mpc connectors are required if using #! - #4 cable. The 2MPC connectors are required if using 1/0 (1-ott) through 3/0 (3-ott) cable.