These yellow wire connectors offer an economical connector that brings a lot of value in comfort and performance with a wide wire range in one compact connector. The straight, ribbed caps provide a sure grip for a variety of electrical applications, while the copolymer shell and fixed, live-action, square-wire spring threads itself on as it draws wires into the connector, creating a secure pressure grip. The rugged, thermoplastic, flame-retardant shell withstands extreme environments. The deep, wide-throated skirt protects against flash over and turned back strands providing excellent dielectric protection at an economical price point.