Industrie Class 1 – STANDARD RUBBER-TYRED WHEELS Class 1A – ANTISTATIC & CONDUCTIVE WHEELS Class 2 – ELASTIC RUBBER-TYRED WHEELS Class 3 – SUPERELASTIC & PNEUMATIC-TYRED WHEELS Class 4 – POLYPROPILENE OR POLYAMIDE WHEELS Class 5 – HIGH TEMPERATURE WHEELS Class 6 – POLYURETHANE WHEELS Class 8 – HEAVY DUTY NEW GENERATION Class C – INSTITUTIONAL AND FURNITURE CASTORS Class E – HEAVY DUTY INDUSTRIAL MATERIAL HANDLING Class MD – MEDICAL DIVISION MARKET Class S – INDUSTRIAL CASTORS Class SA – SELF-ALIGNING CASTORS Class SP – SPECIAL PRODUCTS Class X – STAINLESS STEEL CASTORS