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 (2) Save when you buy the 2 pack! 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