1. Bearing Type&Specification : The item model is 608 bearing. Here is the dimension for your reference: bore diameter 8.0mm, outside diameter 22.0mm, thickness 7mm2. Outer Ring&Inner Ring: The outer ring and inner ring of this bearing are all made of stainless steel, which can performance well with low noise. It has the characteristics of oxidation resistance, thus provides you with a long usage life.3. Long rotation time4.Silicon nitride ceramic balls for resistance to shock, corrosion, and high temperaturesColour:SilverMaterial:stainless steelSize: 2.2cmPackage Contents:8x Scooter 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.
