25 pcs Bearing:10 pcs 8x24x8mm Deep Groove Ball Bearing & 15 pcs 8x22x7mm Skateboard BearingsDouble Shielded bearings good axial and radial support performance, durable choice for high speed rotation.608ZZ bearings are made of chrome steel for durability and resistant to deformity under heavy loads, and is double-shielded to keep lubricant in and contaminants out.Dimensions suitable for use in such applications as skateboards, inline skates, and scooters;Fits most of skateboard wheels; Pre-greased, No maintenance needed.This single-row bearing is built to support radial loads and has a revolutions per minute (RPM) limit of 34,000 with greased lubrication.Applications:Are used in a range of applications from agriculturalmachinery to conveying equipment, robotics, equipment, elevators, rolling mills, ship rudder shafts, and aggregate crushers, among others.Miniature Deep Groove Ball Bearing suitable for all kinds of industrial equipment, Micro-motor,small rotary motor,office equipment and so on.This type bearing is Miniature Single Row Deep Groove Ball Bearing,mainly take the radial load as well as moderate axial load.These ball bearing is fitted with two rubber dust seal to prevent ingress of dirt, water and foreign matter.Bearing Features: simple configuration,high speed,hight precision,less coefficient of friction,less vibration and noise,most widely used.Material: Steel + Bearing SteelSize: 22 x 22 x 7mm (Inside Diameter 8mm)Color:SilverProduct Name: Deep Groove Ball BearingModel: 628RS + 608ZZ ABEC-7 BearingsInside Diameter: 8mmOutside Diameter: 24mmThickness: 8mmPackage Content: 10 x Deep Groove Ball Bearing15 x Skateboard BearingsOnly the above package content, other products are not included.Note: Light shooting 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.