For testing accessibility in accordance with many UL Standards. In many Standards, this probe is used for access to enamel coated wire (i.e. transformers and inductors). The handle is nylon and the tip is stainless steel.
For testing accessibility to hazardous moving parts such as access to fan blades through a fan finger guard. Complies with UL Standards. The handle is made of nylon. The finger is made of stainless steel.