3M Scotchlok Non-Insulated Butted Seam Flanged Block Forks is a lug connection terminal that ensures an ideal fit while offering reliable and safe performance. The non-insulated, butted-seam barrel has a beveled mouth that guides the wire into position, and it withstands temperatures of 347 degrees F (175 degrees C). Electrolytic copper construction offers good conductivity and a tin-plated finish resists corrosion.