1pcs Non-Standard deep Groove Ball Bearing 6203 Inner Diameter 15 16 17 19 20 Outer Diameter 40 42 Thickness 9 12 13mm(17X42X12mm)

Material: High carbon steel, it has the characteristics of high speed operation, low noise, high temperature resistance and smooth rotationPrelubrication: The bearings are coated with a small amount of lubricating oil, which will prolong the service life of the product and ensuring smooth operation and reducing the need for frequent maintenance.

• Wide Application: These bearings are widely used in a variety of small machinery,including Electric Toys, Furniture wheels, skateboard wheels, inline skates, and so on
• High Hardness and Toughness: Our bearings are made from premium bearing steel, specifically designed for bearing applications. This high-quality material offers exceptional hardness and toughness, making it ideal for high load-bearing capacity in small machinery and skateboarding equipment.
• Low Friction Design: Designed with a low friction coefficient, our bearings allow for effortless spinning with minimal resistance. This characteristic reduces energy loss, prolongs lifespan, and enhances efficiency, making them a smart choice for any skate or machinery setup needing reliable load-bearing capabilities.