Specification Brand : Heyiarbeit BulletPoint : Material of Mail Shell & Ball: carbon steel BulletPoint1 : [Size] - 25mm/0.98" diameter ball bearing roller, 360 degree rotation BulletPoint2 : [Capacity] - The ball is made of nylon.Support up to 66Lbs/30kg each BulletPoint3 : [Mouting Size] - Mouting Hole Diameter: 4mm/0.16"; Mounting Hole Distance: 56mm/2.20" BulletPoint4 : [Function] - According to different bearing requirements, the distribution density of the ball transfer units can be set arbitrarily BulletPoint5 : [Application] - It is widely used in various transmission systems, feed systems, processing systems,packaging machinery auxiliary equipment, as well as object turning and confluence. Moreover, it works perfectly for drawer, so that you can roll it out with minimal pull. ExternallyAssignedProductIdentifier : 8306064696572 ItemName : Heyiarbeit Ball Transfer Bearing Unit 0.98" Load 66Lbs Flange Mounted Nylon for Transmission,4pcs ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 5 centimeters ItemPackageDimensions_Width : 5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : ball-transfers Manufacturer : Heyiarbeit Material : Nylon NumberOfItems : 4 PartNumber : DM145600WGP04-FBA ProductDescription : Ball Transfer Units It is an Omni-directional load-bearing spherical ball installed in the restraining device. It is usually designed as a large ball supported by smaller ball bearings. They are usually used in an inverted ball up a position where objects are quickly moved across an array of units, known as a ball transfer table, a type of conveyor system. Tips For transporting flat, smooth objects, such as trays NOT for transporting stuff which has uneven or soft bottom surface, such as cloth wrapping Can NOT be used as swivel caster to move on the floor