Bicycle headset bottom bracket is perfect tool for helping you to replace your bike old torn part, easy to use, convenient to install. Features: Bike headset bottom is made of fine quality steel materials, sturdy, anti-rust and practical for ling time use. Integrated bearing design, fit bike headset perfectly without any gaps, also the hardened steel may have fine rigidity and durability. Fine turning, fine clamping accuracy. Installation labor-saving design, bearing lubrication ball, labor-saving operation, not easy to press crooked Specifications: Type: Bicycle Headset Installation Tool Material: steel Color: Silver Diameter: 55mm Item size: 265 * 165mm / 10.4 * 6.5in Item weight: 500g / 1.1lb Package size: 300 * 150 * 50mm / 11.8 * 5.9 * 2.0in Package weight: 620g / 1.4lb Packing List: 1 * Bicycle Headset Installation Tool