Safety : The Test Hooks Clips are designed with your safety in mind. Operating at a voltage of 600V , a current of 3 amperes, and a working temperature range of -40℃ to 100℃, these test hook clips are intended to provide a secure connection for your testing needs without compromising on safety precautions.User-Friendly 4mm Plug: This outstanding Test Lead Kit away with complex connections with its 4mm Interface that utilizes a push-in connection. This push-in connection system ensures a simplified and fast setup process, enabling you to concentrate on accuracy of testing instead of worrying about setup hassles.Superior Durability: Each test hook in our kit is crafted from high-quality -plated brass and ABS. This ensures not only a sturdy construction for safe and effective testing but also a long service life, giving you the peace of mind that your tools are built to last.Practically Designed: of our test hook is retractable and fitted with a spring, enabling you to securely grip objects during testing. This spring-loaded feature provides the tool with a firm hold on objects, significantly reducing the chances of any unfortunate or disconnections during important tests.Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you!Colour:Black & RedMaterial:PlasticSize:4mmPackage Contents:4 x Test Hooks ClipsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.