DescriptionThe bicycles bearing with sealing ring can be dustproof, easy to use and a long service life The bike bearing has a good finish, smooth surface, stable rotation, and matches with your bicycles Contains high-viscosity grease, lubricating and rust-proof, and the sealing ring can be dense and waterproof, and it requires no maintenance for a long timeFeatures- Color: Assorted color - Size: 4 10X4 10X0 50cm or 1 61X1 61X0 20 inch - Material: Bearing steel - The bearing is made of quality steel material, sturdy and durable to use for a long time - Fine machining ensures sleek surface and smooth rotation, fits perfectly with your bike headset - Seal effectively saves grease and prevents impurities from entering - Useful accessory for replacing the old headset of a bike Larger lower bearings boost strength and durability - Built-in grease in the slot can prevent the balls from corrosion and make them rotate freely Packing list2 X bearingsProducts from WUZHOU's store Note: 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.