Cable Connector Sockets and plugs, Male, with a cable capacity of 3/0, 4/0. Designed to efficiently conduct the current through a detachable-type connection.Cam-action design allows lock-in with a twist and pulls the two halves tightly together.Metal parts are Pairecision machined from heavy brass extrusion resists rust & corrosion.Connector covers have remarkable resistance to heat, cold, abrasion, ozone, oils & solvents. 1 Each