Gardner Bender Wire Connectors are engineered to exceed the expectations of professional electricians. Perfect for commercial or residential applications GB Wire Connectors offer world-class quality, performance and application versatility. Closed end connectors are ideal for making a simple connection of two or more wires to create a pigtail connection. The pigtail connector is a closed end, crimp on wire connector used to secure electrical connection points. The proper installation method is to connect the wires together first and then add a pigtail connector and crimp tight to provide a safe, secure and stable connection particularly in applications subject to vibration. Designed to be used with both solid and stranded wire these closed end connectors feature a tin-plated seamless copper sleeve with translucent nylon insulation. Connector rated for 22 - 10 AWG applications up to 300V with a Min: 3 - 18 and Max: 1 10 w/ 1 20. UL listed in US and Canada and CSA Certified.