It is clear from the manufacturer's product entry that the brush is intended as a cleaning tool related to soldering activities

Opto F+E 3

Used for working on live equipment

Sålmateriale: FlexStep® polyurethan (PU)

and the operating temperature range is as stated above

Kuglebolte Ø20mm x M10 indv. gevind MIL4703101404 It is clear from theProduct Overview The Kugelanschlussbolzen mit Stahlgewindestift from HORSTMANN is listed under the company's Fixed Phase Connection Points and is supplied in variant Art. Nr. 63 0102 002. The product is a ball joint bolt with a steel threaded pin designed for use in Horstmann's earthing and phase connection equipment for medium voltage. Description Variant: Kugelanschlussbolzen mit Stahlgewindestift, Art. Nr. 63 0102 002. Ball diameter: 20 mm. Thread: