Fitment: Suitable for front fork tube diameter: 1-1/8 inch (28.6mm). Applicable to 34 mm frame head tube + 28.6 mm straight steerer fork head tube, crown race: 30 mm.
Wide Usage: Suitable for MTB, road bike, mountain bike, bicycle. It can be used repeatedly, easy to install and disassemble, and can be installed in a few minutes with a hex wrench.
Quality material: Made of aluminum alloy, durable and sturdy. Aluminum alloy construction delivers excellent stability and durability.
Threadless Bicycle Headset: 1-1/8 inch (28.6mm) threadless headset with two smooth sealed cartridge bearings.