Feature Highlights: 1. Safe & Reliable Design: These test hook clips are built for safety, rated for 600V voltage and 3A current, with a working temperature range of -40℃ to 100℃. They provide a secure connection for all your testing needs. 2. Easy-to-Use 4mm Plug: The 4mm push-in connection makes setup quick and simple—no complicated wiring. Just plug in and focus on your testing. 3. Durable Construction: Made from high-quality gold-plated brass and ABS plastic, each hook is sturdy, long-lasting, and built for reliable performance. 4. Practical Retractable Hook: Each hook features a spring-loaded retractable design, ensuring a firm grip on test points and preventing accidental slips or disconnections. 5. Versatile Compatibility: Designed to work with most digital multimeters and extension leads, these hooks are perfect for a wide range of electrical testing tasks. Product Details: These universal 4mm test hooks offer a safe, durable, and user-friendly solution for electrical testing. With their spring-loaded retractable design, they securely grip test points while the 4mm push-in plug ensures fast and hassle-free connections. Ideal for professionals and DIY enthusiasts, they are compatible with most multimeters and extension leads. Specifications: - Color: Black & Red - Material: Plastic (ABS) & Gold-Plated Brass - Interface: 4mm Plug - Voltage Rating: 600V - Current Rating: 3A - Operating Temperature: -40℃ to 100℃ Package Includes: 4 x Test Hook Clips Note: Slight color variations may occur due to lighting or display differences, but this does not affect performance. Please allow a minor size tolerance of +/- 1–3 cm.