4 mm banana socket provides a safe and reliable connection with a wide range of multimeters and test devices. The standard size ensures you always have the right connection. Piercing needles penetrate insulation without damaging the cable, and can be removed when not needed. Measuring tips are ideal for diagnosing vehicle faults and taking voltage measurements in circuits, delivering precise and reliable readings to support repairs and maintenance. Made of high-quality materials, these tips offer reliability and long-lasting use, suitable for daily work and high durability. Use scenarios - Vehicle diagnostics: measure voltages and diagnose faults in automotive electrical circuits. - General electrical testing: connect to multimeters for accurate voltage readings during troubleshooting in workshops. - On-site maintenance: attach to insulated cables without stripping insulation; remove needles if they are not required.