The small tip can slide through the weather bag seal to the probe connector. As acupunctures and moxibustion probes, they are used to the insulation of wires, so as to conduct automobile electrical measurement without damaging wires. When dealing with small , they can be used as needle probes. This set of 5 probes is also equipped with 20 replacement pins, eliminating the need to replace the entire probe. Its diameter is very small, and the needle tip is particularly , making it an ideal for penetrating the insulation of small diameter wires.