1. **Premium Material Construction** - Crafted from high-quality copper, strong magnet, and PA66 nylon, this test probe ensures excellent electrical conductivity, stable adsorption performance, and long-term resistance to wear and corrosion for reliable daily use. 2. **Universal 4mm Banana Interface** - Features a standard 4mm interface diameter that perfectly matches most digital multimeters and megohmmeters on the market, enabling quick and secure connection without additional adapters. 3. **Clear Color Identification** - Designed with red and black color coding to distinguish positive and negative poles easily, effectively avoiding wiring errors during testing operations and improving work efficiency. 4. **Wide Application Scope** - as a professional accessory for multimeters, multimeter test leads, digital multimeters, and megohmmeters. It is a must-have DIY electrical supply for mechanics, electricians, and electronic enthusiasts. 5. **Safe & Hassle-Free Use** - Contains no high-concerned chemicals, meeting strict safety standards for electrical testing tools. The single-piece packaging is convenient for storage and carrying, suitable for both indoor maintenance and outdoor field operations.