Tribological checks have been carried out using a ball-on-disc T-eleven tester. The balls had been manufactured from metal, whereas the discs ended up made from steel, aluminium oxide, zirconium oxide, polyamide and poly(methyl methacrylate). The description of the product as well as approaches has become specified within the literature (Szczerek https://eddieb726vcj8.wikitron.com/user