Upgrade your bike maintenance with this high-quality Bike Headset Bearing, crafted from premium bearing steel for exceptional durability and rust resistance. Designed to fit most full hidden, semi-hidden, and external bearing headsets, this bearing ensures smooth and reliable rotation, enhancing your riding experience and extending the lifespan of your bike headset. Key Features: · Premium Bearing Steel Material: Made from sturdy, anti-rust steel to withstand wear and provide long-lasting performance. · Precision Machining: Finely machined surface guarantees sleek finish and smooth rotation, ensuring a perfect fit with your bike headset. · Effective Sealing Ring: Protects against dust and water ingress, significantly improving durability and reliability under various riding conditions. · Built-in Grease Slot: Pre-lubricated with grease to prevent ball corrosion and promote free, frictionless movement for optimal headset performance. · Wide Compatibility: Available in multiple sizes (41mm, 41.8mm, 47mm, 49mm, 52mm) to suit a variety of bike headset models, making it an ideal replacement part for worn or damaged bearings. Specifications: · Material: Bearing Steel · Color: As shown in picture · Size Options (Outer Diameter / Inner Diameter): Approx. 41/30mm; 41.8/30mm; 47/34.5mm; 49/38mm; 51/40mm; 52/41mm · Weight: Approx. 21-32g Package Includes: · 1 x Bike Headset Bearing This Bike Headset Bearing is an essential accessory for cyclists looking to replace old or worn headset bearings, ensuring smooth steering and improved bike handling. Its robust construction and protective features make it a reliable choice for maintaining the performance and safety of your bicycle.