1、RUBBER SEALS: These deep groove ball bearings have double sided rubber seals to prevent contaminants from entering and to save lubricant. 2、HIGH HARDNESS: These ball bearings are made of bearing steel, and their steel construction makes them durable and will not deform under heavy loads. 3、OUTSTANDING PERFORMANCE: Deep groove ball bearings have the advantages of low noise, fast heat dissipation, low friction, high speed, high temperature resistance, etc. 4、EASY INSTALLATION: The ball bearing has no complicated installation steps, easy and quick to use, and can be used directly after installation. 5、WIDE APPLICATION: Ball bearings are widely used in industrial machinery, motobikes, automobiles, power tools and mechanical equipment. 2 x Deep Groove Ball Bearing Item Type: Deep Groove Ball BearingMaterial: Bearing steel