3M Scotchlok Large Gauge Compression Butt Connector ensures an ideal fit while offering reliable and safe performance. The connector has a non-insulated, seamless barrel and withstands a maximum temperature of 347 degrees F (175 degrees C). Electrolytic copper construction offers good conductivity and a tin-plated finish resists corrosion.3M Scotchlok Large Gauge Compression Butt Connector has a non-insulated, seamless barrel and provides electrical connection to a pre-stripped end of a stranded wire. It has chamfered barrel ends that enable fast, simple wire insertion and allows for correct positioning with built-in wire stop. UL Listed, CSA Certified and RoHS 2011/65/EU Compliant.