E-Z-Hook is a privately owned U.S.-based manufacturer of electronic test accessories, founded in 1956 and headquartered in San Dimas, California. The company invented the first spring-loaded test hook, which was patented the same year. Since 1970, under current ownership, the product line has expanded to over 10,000 items. Core product categories include test hooks, test leads, probes, adapters, terminal blocks, breakout boxes, and patch cords. Notable product series are the X100 Mini-Hook, XKM Micro-Hook, and Macro-Hook families, which cater to a wide range of PCB testing and signal access needs. E-Z-Hook is recognized throughout the electronics industry for superior component quality and rapid response to customer requirements. The company provides custom manufacturing services for specialized cable assemblies and test fixtures. Its products are used across industries such as automotive, telecommunications, aerospace, defense, and education. E-Z-Hook maintains a strong reputation for innovation, offering solutions for fine-pitch, high-density circuits and other advanced testing challenges. With over six decades of experience, E-Z-Hook continues to be a trusted partner for engineers and technicians worldwide.