For more than 100 years, the Hubbell® name has been synonymous with innovation. As a pioneer in the development of new technologies, Hubbell® wiring device has always strived to improve performance safety and functionality across our entire product line many Hubbell® innovations have become the industry standard for protecting people, increasing value and extending product life cycle for maximum sustainability. Insulgrip® is yet another example of a Hubbell® innovation that has become the industry standard. Insulgrip® products are synonymous with Hubbell® ongoing commitment to discovering ways to make products safer and Last longer. By encasing wiring devices in tough nylon housings, Insulgrip® devices ensure high impact, heat and chemical resistance While insulating current carrying components from the user for maximum safety. Insulgrip®'s cord gripping design clamps conductors, not just the cable jacket, making it the industry's most powerful cord grip with superior strain relief. Each Insulgrip® device is manufactured with roomy, separate wiring chambers to insulate conductors and an individually molded face to keep out dust and debris that can cause contamination over time.