Muvtons black elastic rubber tire wheels firmly chemically bonded to precision machined cast iron cores. Highly resilient 75° ±5° shore a rubber provides very smooth and silent running. Can be used for power towing applications by suitably DE rating the load capacity. Wheel bearing options: sealed precision ball bearings, tapered roller bearings or roller bearings. Temperature range : -20°c +75°c tread options: anti static, conductive and oil resistant wheels are available.