Designed to efficiently conduct current through detachable-type connection. Cam-action design allows lock-in with a twist and pulls the two halves tightly together. Metal parts are precision machined from heavy brass extrusion; resists rust and corrosion. Moulded Rubber Connector covers have good resistance to heat, cold, abrasion, ozone, oils and solvents. Tapered ends lock out moisture, oil, and dirt. Male/female connectors are interchangeable with popular like-size competitor models.