Bearings with Stable Performance and Cost-Effective, Double-Sealed and Pre-Lubricated, Deep Groove Ball Bearings.USABLE WITH -- Suitable for use in Home Appliances, Garden Machinery, Outdoor Vehicles, Electric Toys & Tool ,Industrial Production and More.SIZE -- Bore Diameter: 17mm Outside Diameter: 30mm Width: 7mmRolling bearings use rolling elements to maintain the separation between moving parts to reduce rotational friction and support radial and axial loads.Bearing Number: 6903ZZBearing Type: Ball BearingColor:SilverMaterial:Bearing steelPackage Contents:10 x 6903ZZ 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.
