Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris.Stainless Steel Bearings provide unparalleled corrosion resistanceHighly recommended if your headset will be exposed to wet conditions or sweatCustom molded dual-lip seal on the crown race to protect lower bearing in the toughest conditionsLifetime warrantyItem SpecificationsBearing TypeStainless SteelColorRaw SilverCrown Race40Lower Stack Height12.25S.H.I.S LowerEC44Weight45 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 810006809824