Gardner Bender AMT-127 Xtreme Environment Butt Splice Terminal, Heat-Shrink Insulation, 12-10 Wire Gauge (AWG), 25 Pk., Yellow Butt splice Insulates and protects connections from wire pullout, moisture intrusion and abrasion Heat activated adhesive melts and flows to create a seal Resists salt water, oil, gasoline and other environmental contaminants 12-10 gauge