Description: Simple and convenient installation steps make it save time and energy. Double-sided rubber dust cover can prevent pollutants from entering. High load-bearing capacity and high performance make it very practical and reliable. The workmanship that meets the production standards guarantees its quality. Made of bearing steel material, it is very durable to use. The inner diameter is 4cm, the outer diameter is 5cm and the thickness is 0.6cm. It is very suitable for small hobby 40mm shaft or pole projects. Item Name: Bearing Material: Bearing Steel Model: 6708-2RS Quantity: 1Pcs Color: Silver Color Rolling Body: Single Row Type: Deep Groove High Speed Features: Low Friction, Ultrathin, Corrosion-resistant Size Details: Size: Inner Diameter: 4cm/1.57", Outer Diameter: 5cm/1.97", Thickness: 0.6cm/0.24" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bearing