If you"re committed to threaded forks and quill stems, you can"t beat the Chris King 2Nut Threadset Headset for adjustability and durability. The 2Nut was the original Chris King headset, and the only one the company sold for the first 14 years of the its existence. Precision-machined, stainless steel cartridge bearings turn smoothly inside the aluminum cups, and adjustments are a quick turn of the wrench away. The 2Nut is also ideal if you need to add a cable hanger or spacers to your headset stack. Product FeaturesMaterial: (cups, lock nuts, adjusting nut) aluminum, (bearings) stainless steelWeight: 94 gRecommended Use: cycling, cyclocross, randonneuringManufacturer Warranty: 10 years