Morris 97103 Morris Products 97103 Insulated Splice, Black, Single Entry Connector Type, 2 Ports, 2 - 14 Wire Range, 2 Conductors,  Black Black Insulated Electrical Power Connector Single Side Entry Splice - Single Entry Insulated Connector makes splicing easy and secure. Both Wires Enter Same Side of insulated connector Insulated Connector is 6061-T6 Aluminum CU9AL Dual Rated for use with Copper and/or Aluminum wires Insulated with rugged high-dielectric rubber/vinyl coating Pre-filled with oxide inhibitor