XLB PO3K Bicycle Bearings, Steel Ring Bike Headset Bearings, 41MM X 30.15MM X6.5MM Blue Sealing Ring, Inner Ring Blackened Sealed Bearings Single Repair Accessory for Mountain Road Bike

【Anti-Rust & Durable】: The bike stem bearing is made of quality steel material, which is anti-rust, sturdy and durable to use for a long time

【Anti-Dust & Waterproof】: The sealing ring bearing is good for keeping dust and water away, prevent impurities from entering to lengthen the durability

【Stable Performance】: Built-in grease in the slot can prevent the balls from corrosion and make them rotate freely

【Exquisite Workmanship】: Fine workmanship ensures sleek surface and smooth rotation; The bike headset bearing help makes your riding more enjoyable【Premium Material】: The bike stem bearing is made of premium bearing steel; Anti-rust, sturdy, durable & longlasting