Superior Material Construction: Featuring a main ball made of robust bearing steel and a housing crafted from carbon steel, this ball caster roller bearing is designed to withstand rigorous usage in industrial environments. High Load Capacity for Heavy Applications: Each unit can support up to 880 lbs, with a maximum load capacity reaching 990 lbs. This makes it ideal for applications requiring substantial weight support without compromising mobility. Single Unit Packaging: Each package contains one ball caster roller bearing, ensuring you receive a complete unit ready for installation. This packaging approach simplifies the process for users needing individual replacements or specific quantities. Design with Heavy-Duty Performance: Despite its substantial load-bearing capabilities, each unit weighs only 2.54 lbs, making it easy to handle and install while providing a reliable solution for transferring heavy loads. Colour:Silver Material:stainless steel Package Contents: 1 * -45-FL bearing Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.