ZTTO ZS44 4444T Bike Headset Straight Tube Frame to Tapered Tube Fork Bicycle Headset •Made of aluminum alloy material, sturdy and durable •Fine workmanship, flexible and smooth rotation •Easy to install, not easy to rust, long service life Specifications: •Material: aluminum alloy + bearing •Type: 4444T •Applicable frame: Head tube: upper inner diameter 44MM, lower inner diameter 44MM •Front fork: Standard tapered tube front fork, upper 28.6MM, lower 39.8MM Package included: •1 x Bicycle Headset Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!