For reliable durability and impressive performance, choose these 3M™ Scotchlok™ color coded Butt Connectors to secure your wire work. The chamfered barrel ends let you slide the wire in with ease, while the built-in stops correctly position components for a successful connection. Once inside the connectors, pre-stripped stranded wire ends receive insulation from the yellow nylon covering, and the seamless barrels deliver the electrical connections. As an added benefit, the color coded exteriors of these butt connectors help you identify and organize your wire work. For great results, use wire sizes 12 to 10 AWG with these UL Listed, CSA Certified and RoHS 2011/65/EU Compliant connectors.