HEAVY-DUTY CASTERS: The HANDSAMMU's heavy duty casters are made of high-quality Cast Iron, bright galvanized steel wheels and yokes. The Heavy Duty Caster wheels are highly compressed sintered iron,also have strong abrasion resistance, are not easy to rust, and have strong shock absorption and buffering performance, which increases the service life. CASTER SPECIFICATION: Industrial caster wheel 5 inch diameter, 2 inch width, top plate: 4"x 4-1/2", caster overall height: 6-1/2", with ¾” roller bearing,and ½" ID spanner bushing with Zerk Axle and Nylon Nut. One caster can be loaded up to 1000lbs, strong load-bearing capacity, so you can buy and use with confidence. CASTER FEATURE: The Steel casters contains two ball bearings, which can rotate freely and is shock resistant. The Caster Wheels are specially engineered to withstand harsh chemical environments and are resistant to greases, blood, oils, brine, solvents, and water including wash down applications. WIDELY USED: The Heavy Duty Caster Wheel can be easily installed and used, and are designed for handling.These Casters are commonly seen on high-end furniture dollies, carts, dolly cart casters, food service cart casters, material handling cart caster,stocking cart casters,and many Industrial cart casters. These wheels are made to outperform and outlast the competition. QUALITY ASSURANCE: First of all, thank you for choosing HANDSAMMU'S heavy duty casters. If you have any questions or quality problems about caster wheels, please contact us in time, we will solve the problem for you as soon as possible. Product specifications: Wheel material: Cast Iron Wheel diameter: 5 inches Wheel width: 2 inches Caster overall height: 6-1/2" Top plate size: 4"x 4-1/2" Load capacity: 1000LB Wheel color: Sliver Number of Casters: 1