Description The 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 time! Features - Color: Assorted color. - Size: 4.10X4.10X0.50cm/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. 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