High hydrolysis resistance 

Unaffected by high humidity and high temperatures, poly-ether based compounds with high hydrolysis resistance last much longer than a poly-ester based compounds.

Premium grade material 

Premium grade polyurethane with market leading physical properties including optimum hardness leading to lower rolling resistances (especially when compared with poly-ester based compounds) and higher performance across many varied applications.

Quality tested 

Test conducted by the R&D National Bureau of Standards found the PROK Polyurethane roller wore 4.5 times slower than a standard steel shell.