Best Welds Cable Connectors 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. Molded rubber connector covers have good resistance to heat, cold, abrasion, ozone, oils and solvents. Tapered ends lock out moisture, oil, and dirt Pack of 2