Morris Products 97020 Insulated In-Line Splice, Black, 2/0 - 14 Wire Range, 7/32" Allen Hex, 3.25" Length, .87" Width, 1.52" Height Insulated Electrical Power Connector In-Line Splice - Black Insulated Splice for easy fast hassle free installations 6061-T6 Aluminum CU9AL Dual Rated for use with Copper and/or Aluminum wires Insulated Splice with rugged high-dielectric Rubber/Vinyl Coating Pre-Filled with Oxide Inhibitor Insulated Splice provides Easy Re-entry for changes, inspection or troubleshooting