Halex 3/8 In. Die Cast-Zinc Clamp 10/3 Wire Size Box Connector (100-Pack) is a reliable clamp-type box connector designed specifically for non-metallic sheathed cable. Crafted with a durable die-cast zinc body, this connector ensures long-lasting performance and secure connections. It features two screws for easy installation and accommodates a maximum wire size of No. 10-3. The trade size is 3/8-inch with a knockout size of 1/2-inch, making it suitable for a variety of wiring applications. This product is UL (Underwriter's Laboratories) listed, ing safety and compliance with industry standards. Model Number: 05103B