Check the listing for details. 34/44/44-56mm 1-1/8" Threadless MTB Road Bike Bicycle Sealed Bearing Headset Set. Color: Black/Red, Condition: New. Listed at 12.87 USD. 【Applications】34-34/44-44/44-50.6mm suitable for 28.6mm straight steerer fork head tube;41.8-52/44-55/44-56mm suitable for 28.6mm straight tapered steerer fork head tube. 【Double-sealed bearings】 Equipped with double-sealed steel bearings to capture compression rings and reduce the number of loose parts. It is smoother and easier to maintain than ball bearings, making the handlebars light and smooth. 【Headset Expander Plug】Suitable for front fork with upper end outer diameter of 28.6mm, and carbon fiber front fork and mountain suspension fork are applicable. Specification: Brand: BUCKLOS Material: Aluminum alloy CNC machining Surface Treatment: Anode Finished Size:34/44/44-50.6/44-55/44-56/41.8-52mm Crown Race: 30mm Color: Black/Red Weight: about 112.8g Package included: 1pc*Headset.