Headset Tapered Bearing 34/42/42-52/44/44-55/44-56mm 100% brand new and high quality Features: Durable, smooth, light-weight, long-lasting headset, representing the perfect balance of performance. suitable for MTB, road bike, convenient and durable. Complete with star nut and bolt. It #39;s necessary for your bicycle accessories. Specification: Material: Aluminium Alloy Shape: Round Size: Diameter: 44-44MM,34-34MM,41.8-52MM,44-55/56MM Weight: approx. 130g Color: Black Quantity: 1 set Note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!