Source: Treston product catalog (official product list)

Package weight: 9

mehrdrähtige (multi-stranded) and feindrähtige (fine-stranded) round conductors

The documentation explicitly mentions use on surfaces such as rubber

This tubular cable lug is an F-series 90° cable lug identified as ICF351290 from WEITKOWITZ / Intercable

Kabelsko CU fortinnet UL 25mm²-Ø12 EURO-serie insp. Hul Unit(s):Pcs Source: Treston product catalog (officialProduct Overview This cable lug, ICR2512SL, is a straight tubular (R series) copper cable lug with an inspection hole. The description states the material as Cu HCP 99. 9% (copper) and that the surface is electro galvanized electro tinned. The product is listed for a conductor cross section of 25 mm and screw thread M12. Material and Construction The ICR2512SL is manufactured from Cu HCP 99. 9% (copper) and is electro tinned as specified in the