The Easy-Twist WC-B-B 1,000-Count Bag of Standard-Style Blue Wire Connectors are designed for use on copper wires in the 22-14 AWG size range. They???re made of flame-retardant thermoplastic rated for a maximum temperature of 105?? Celsius (221?? Fahrenheit). The quick-grip square spring design grips in fewer twists and can dead-end a single wire, while the ergonomic ribbed texture makes them easy to twist. Their compact design is useful for applications in tight areas or anywhere else you need to connect wires. Manufacture Part Number: WC-B-B UPC - 662381353061 Sold as a pack of 1000 Units. Standard List Price each is $0.1280