It's perfect for those who need a dependable headset for their bike. Crafted from 6061 T-6 Aluminium for strength and lightness Features high-quality, low friction face-seals Includes a durable steel crown race Equipped with dependable black oxide, sealed bearings Internal parts are compatible with the 10, 40, and 110-series The Cane Creek 40 Headset Lower EC49/40 ensures a smooth ride with its well-engineered components.