【Industrial Heavy Duty Casters】These wheels can bear a lot of weight. Each caster holds up to a maximum of 1000 lbs.Get so much more longevity out of this Phenolic wheel when comparing it with an industry-standard plastic or hard rubber wheel. With this Phenolic wheel, you will have peace of mind knowing it is one of the most impact-resistant wheels with the highest weight capacity in its class. 【High Temperature Casters】Special phenolic casters can withstand temperatures from -50° F to +250° F, so they are widely used in industrial bakeries, outdoor mobile garbage bin, portable folding stages, flat trolleys, and logistics conveyor belts. 【Smooth and No Marking】The caster wheels are equipped with roller bearing, providing a smooth, quiet and no marking experience on different road surfaces. Phenolic wheels perform best on slippery surfaces. We highly recommend these heavy-duty casters for use in clean, dry environments such as warehouses, garages, buildings, retail stores, and anywhere you have clean, dry floors. 【Exceptional Quality】Phenolic wheels are molded from soaked canvas mixed with other compressed materials, then molded under high pressure and heat. These phenolic wheels are highly resistant to oils, greases, gasoline and mild acids. 【WE CARE FOR YOU】：Heavy duty casters come with friendly customer service. If you have any questions, you can contact us for a solution, we will definitely provide you with a satisfactory solution. Heavy Duty Industrial Casters