· SUS304 is used for the metal fitting including the balls in the swiveling section.· Uses stainless steel needle bearing on the vi xử lý core metal wheels and POTH urethane foam wheels.· Smooth moving bilayer bearing mounted dustproof cover is equipped on universal pivotal part.· SWUW wheel for hygienic environment (antibacterial white urethane).· SEUW wheels (anti-static urethane foam) are suitable for reducing static electricity in clean rooms & similar applications.· Uses originally developed, strong box style for wheels (SW, SUW, SWUW, SEUW wheels).