Make better-looking electrical repairs and accessory installations with Dorman Builders Series components. These butt connectors feature a color-coded band to identify the proper wire gauge and black heat-shrink insulation for a clean appearance. Every Dorman part is backed by over 100 years of experience, along with a dedicated team of product experts, automotive engineers and technical support specialists based in the United States. We are passionate about giving repair professionals and vehicle owners greater freedom to fix cars and trucks, which is why we have more than 100,000 parts in our catalog today and promise to never stop driving new solutions. Product Features:Professional appearance - these butt connectors are designed for a clean, professional look when completedColor-coded - blue color bands make it easy to identify these connectors as suitable for wire from 14 to 16 gaugeHeat-shrink insulation - these butt connectors include pre-cut black heat-shrink tubing for a secure, reliable connectionQuality materials - these connectors are made from high-quality materials for superior conductivity and corrosion resistance