No heat gun needed! These special solderless (crimp-on) terminals feature a sealing compound inside the insulation for a one-step weather-tight connection.
Simply crimp the barrel as you would any solderless insulated butt splice. An adhesive insert clings to the wire insulation to seal out moisture. The crimp barrel is seamless, so you don't need to worry about indexing a seam with your crimping tool.
Translucent yellow insulation quickly identifies the size as fitting 10 to 12 gauge wire. Sold individually.