This probe is used for testing access to document shredders. Conform to the UL60950 Figure NAF.2 and NAF.3 (S5366), IEC62368 figure V.4 and for paper document shredders, shall be inserted into each opening in mechanical enclosure. Three steps of joints are with it, wedge-shaped probe Test probe for shredders. Made entirely of stainless steel. All parts precision machined.