Describe Well Made: This 1mm piercing multimeter probe tip is designed for good contact with insulation on the pins. EASY TO USE: This multimeter needle extension needle is suitable for probes with a diameter of 1mm and can be used directly. Rugged and Durable: This multimeter probe is mainly made of copper, which is durable, rust-proof and not easy to break. Portable: This multimeter probe conversion needle is small in size, easy to carry, does not take up space, and is easy to store. Spare Parts: With good performance and long life, this tester probe is a good choice for replacing old or damaged probes.