1. Bicycle bearing press set made of aluminum alloy and 304 stainless steel, rustproof, strength, durable. Surface anodized and plated treatment, the knurled handle design ensures strength and slip resistance, with a wide range of applications and versatility. 2. Fine Craftsmanship: This pressing tool features fine wires, gloss, and lightweight. CNC precision turning design, aluminum alloy joints with fine threads. Suitable for most head tube lengths, upper/lower pressure blocks made of aluminum alloy. 3. LaborSaving Construction: The flat thrust bearing is equipped with lubricated balls, enabling energysaving operation and reducing the risk of bending. Makes bicycle BB medium shaft installation easier and faster. 4. Easy to Install: This press tool for bicycle headset includes flat axial bearings on both sides of the press block. Hold the handle with both hands and apply pressure slowly to complete installation. During assembly, use a wrench to secure the nut underneath to prevent spinning. Always ensure the bearing is aligned and adjust promptly to avoid damage.