The Thomas & Betts 739P is a robust and reliable twist-on wire connector, specifically engineered to meet the demands of professional electricians. Constructed from durable polypropylene and coated with 100% pure copper to resist corrosion, this connector provides a secure and long-lasting connection for copper conductors ranging from #12 to #6. The winged design enhances grip and provides additional twisting power, ensuring a high-quality connection. Its finger-friendly design reduces hand fatigue during repetitive use, making it suitable for various electrical applications.