NINOSO 3'' Caster Wheels Heavy Duty Casters Set of 4 with Load 1400lbs, Polyurethane on Cast Iron, Industrial Wheels for Cart Workbench Equipment (2 Swivel & 2 Rigid)

["Heavy Duty Casters: 3 inch casters are made by chemically combining a polyurethane elastomer tread with a cast iron core, which offers higher weight capacities while providing good floor protection and a smooth quiet rolling operation. The caster wheels can operate at temperatures between -40°F to +160°F.","Double Ball Bearing: The heavy duty caster wheel has double ball bearings to reduce noise and floor marks for a smooth, quiet, and mark-free gliding experience on a variety of floors. The polyurethane wheels guarantee durability, longevity, and superior roll-ability.","High Load Capacity: Each caster can support up to 350 lbs, with a total capacity of 1400 lbs(set of 4). Caster Wheels heavy duty are easy to push and save effort, which are designed for handling. Polyurethane on cast iron casters offer higher load capacity, superior wear resistance, lower rolling resistance, and better chemical resistance compared to rubber casters, making them ideal for heavy-duty industrial applications.","Caster Size: Top Plate Caster Dimensions: Length: 3-5/8\", Width: 2-3/8\". Hole Spacing: 2-3/4\" x 1-3/4\". Polyurethane caster wheel size: 3\" X 1-1/4\". Overall height of casters: 4.16\". The Heavy duty industrial caster set of 4 are easy to install, so they won't take up too much of your time.","Wide Application: Caster wheels heavy duty work well in both indoor and outdoor environments. Cater wheels are very popular in applications such as trolleys, workbenches, toolboxes, platform trucks, speakers, cabinets, stands, furniture, shelves, coffee tables, display/exhibition equipment, dollies, and other common items found in workshops, garages, kitchens, warehouse and offices."]