Overall height of casters: 6., 3. The Heavy duty industrial caster set of 4 are easy to install, so they won't take up too much of your time. Generous Quantity for Complete Replacement: this package includes 4 non marking casters, divided into 2 swivel casters and 2 rigid casters, making it suitable for a wide range of furniture; Whether you're doing a complete overhaul of the wheels or simply having a few spares hand, this package ensures you have quantity for your needs Quality Material for Durability: comprised of quality TPR... The polyurethane wheels guarantee durability, longevity, and superior roll-ability. Heavy Duty Casters: 5 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. 4 inch Stem Caster Wheels 2000lbs, Threaded Stem Casters Set of 4 Heavy SY America 5" X 2" Caster Wheels - Heavy Duty Industrial Casters, Non-Marking Polyurethane on Silver Cast Iron Core Wheel, 2 Rigid,2000 lbs Capacity Wide Application: Caster wheels heavy duty work well in both indoor and outdoor environments. Hole Spacing: 2-3/4 x 1-3/4. High Load Capacity: Each caster can support up to 500 lbs, with a total capacity of 2000 lbs(set of 4). Polyurethane Wheels With Brake Sy America Polyurethane Steel Heavy Duty Swivel Casters - Industrial Casters With Strong Load Capacity 4400lbs, Silent Use Of Swivel Outdoor Caster 5000 Lbs Caster Wheels heavy duty are easy to push and save effort, which are designed for handling.