Practical FunctionsYou can move objects flexibly and easily by installing a ball conveyor. If installed on a kitchen utensil rack, it is easy to push and pull. Run smoothly, transport goods faster and save more time. Material StructureThe transfer bearing caster housing is made of galvanized iron and the ball is made of nylon. It is durable, hard to wear and has a long service life. And the tensile strength is higher than that of metal. Nylon ball casters can run smoothly and quietly without any noise. Easy to InstallRoller ball transfer casters caster installation space is very small, there is two 4mm installation holes, very convenient and quick installation. You just need to use screws to fix it on the corresponding object. Support UseBall swivel casters according to different load requirements, the distribution density of the universal ball can be adjusted arbitrarily, and it is more flexible and durable through supporting use. Widely UsedConveyor rollers not only can be installed on furniture and shelves, but also can be moved easily. It is also ideal comptiable with auxiliary equipment in transport and handling systems, processing machines and packaging machines. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks comptiable with your cooperation and we'll make you feel satisfied.