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. Built-in grease in the slot can prevent the balls from corrosion and make them rotate freely.