Sufficient Quantity: The roller ball transfer bearings come in of 30 pieces, catering to a substantial requirement for 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. Product Size: The roller ball universal 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 Roller Bearings: 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. 360 Degree Rotatable: 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 rollers are adaptable to transmission 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. Ample Quantity:30 PCS ball bearing rollers, large quantity, easily meet your needs. Quality Material:Ball bearing rollers are made of high quality and sturdy material, reliable and can be used for a longer period of time. Size:approximately 1.2 x 0.8 x 0.6 inches Colour:As Shown Material:steel Package Contents: 1set * ball roller 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.