The Efficient Quantity You Need: the roller ball transfer bearings come in of 40 pieces, catering to a substantial requirement for various installation and replacement applications; The quantity would cater to significant functionality needs in machinery and furniture installations including but not limited to shelves, chairs, desks, tables, cabinets, and more Proportional Utility and Versatility: the carbon steel ball bearing exhibits a size of approximately 1.2 x 0.8 inches/ 3.2 x 2.1 cm (D x H), ensuring a not compact or not large size that doesn't sacrifice strength as it can handle a load capacity of up to about 44 pounds; The design accommodates an assorted range of applications; The ball diameter being about 5/8 inch would suit different types of machinery, processing systems, workbenches, or even household appliances Built to Last with Robust Carbon Steel: our ball bearing rollers are not only designed for functionality but also for robustness; Made from carbon steel, these units resist and wear, ensuring consistent high speed operation without irritating noise; Its robustness is remarkable, built with a material that supports its functional efficiency while minimizing breakdowns and replacements, helping to maintain your work momentum without interruptions The Power of 360 Degree Rotation: enjoy the convenience of varying directional movement with our ball roller bearings; Designed for a smooth, 360 degree rotation, they facilitate a myriad of maneuvers, reducing your effort and enhancing productivity; Whether you're transferring, machining, moving, or processing, our units offer unrivaled rotation speed and direction control, contributing significantly to your daily tasks and applications Broad Ranging Application: with a significant load rating of around 44 pounds, these ball bearing casters are adaptable to various smission systems; They can be effectively applied in your DIY projects, furniture installations, or added as a helpful accessory to wooden boxes, desks, household appliances, and more, exemplifying their extensive utility value The small roller bearings could contribute to improving the efficiency of your work or home space. They can be installed in a variety of furniture such as desks, tables, chairs and cabinets. Additionally, they are suited to uses in household appliances or workbench transmission systems, enhancing the movability and usability of objects in your . Finally, these roller ball caster wheels boast a sleek silver color that enhances their visual appeal. Made from robust carbon steel and designed with purpose, not only do they perform at a high level, but they also bring a professional aesthetic to machinery or furniture they are applied to. Size: Ball diameter: about 5/8 inch Total size: about 1.2 x 0.8 inches/ 3.2 x 2.1cm (D x H) Load capacity: about 44 pounds Package includes: 40 x Roller ball transfer bearings Colour:As Shown Material:Carbon steel Package Contents: 1 set x bearings 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.