3M Scotchlok Non-Insulated Double Male-Female Adapters interconnects 2 disconnects that are already attached to wires. The adapter withstands a maximum temperature of 347 degrees F (175 degrees C). Durable brass construction offers good conductivity and a tin-plated finish resists corrosion.3M Scotchlok Non-Insulated Double Male-Female Adapter has a non-insulated, butted-seam barrel. UL Listed, CSA Certified and RoHS 2011/65/EU Compliant.