3M Scotchlok Non-Insulated Copper Seamless Compression Lug Ring Tongue has a non-insulated, seamless barrel and ensures an ideal fit while offering reliable and safe performance. Copper construction offers good conductivity and a tin-plated finish resists corrosion.3M Scotchlok Non-Insulated Copper Seamless Compression Lug Ring Tongue provides electrical connection to a pre-stripped end of a stranded wire. UL Listed and RoHS 2011/65/EU Compliant.