Features Lightweight & Compact Design: Easy to carry and store, this handheld refractometer is perfect for various liquid samples, making it ideal for home and professional use High-Definition Clarity: Featuring an imported prism and high-definition eyepieces, this ethylene glycol concentration meter provides clear readings for effortless operation Comfortable Grip & Control: The non-slip rubber sleeve ensures a stable hold, allowing you to maintain precise control while measuring battery fluid content Durable Construction: Made from aluminum alloy and rubber, this ethylene glycol refractometer is built for long-lasting use, ensuring reliability in demanding environments Wide Measurement Range: With high accuracy and convenience, this concentration tester allows you to measure liquid content to a high standard, meeting diverse application needs Features: 1、The spring on the front end of the hook can retract, and the hook will firmly hook the item. 2、Can be applied to the test of IC and the repair of mobile phones and other small electronic products. 3、This test hook set has 6 hooks of different colours, which largely simplify the recognition. 4、Has good protection performance and a relatively short circuit to avoid with the feet. 5、Made of PA material, the sturdy test hook has great durability for long use. Specification: Item Type: Test Hook Product Material: PA Model: P5013 Application: Test IC or repair mobile phones and other small electronic products. Electrical Performance: 30V/5A Package List: 6 x Test Hook Package List 6 x Test Hook