Aluminum Flood-Seal Mechanical Splice Two-Wire Kits, conductor range 6-350 connector length 2-9/16 inch, screws per side 1.PRODUCT FEATURES:- Prefilled with Oxide Inhibitor to Prevent Oxidation and Keep out Moisture. - Dual-Rated and Approved for Use with Aluminum or Copper Conductors. - EPDM Rubber Splice Covers Ensure a Fully Insulated, Watertight Repair Splice - There is No Taping, Heat-Shrink or Mastic Required. - Sized for Most Conductors Perfect for Repairing any 2-, 3- or 4- Wire Installation. - RUS Approved.