These butt connectors are equipped with a two-layer insulation and thermoplastic inner adhesive. The ends are shrinkable and filled with hot glue - shrink temperature: 100 ° C - fast shrinking - dielectric strength: 30kV / mm - excellent abrasion resistance - for cable nominal cross-section: & nb ; 4 to 6mm² - material: plastic, electro copper, tin-plated - for direct connection of two cables