Wolf Tooth Components Premium IS42/28. 6 Upper Headset Premium Quality Components Not all headsets are built the same. If you're looking for a headset that is a cut above, then you're in the right place. The Wolf Tooth Components Premium IS42/28. 6 Upper Headset is machined out of aircraft-grade aluminum and features 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. This headset is available in different colors and stack sizes that match your ride. Features Stainless steel bearings provide unparalleled corrosion resistance Engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant Dual-lip seals ride in micro-grooves to keep out water and debris SPECIFICATIONSTechnical Description IS42/28. 6Top Type ISTop Head Tube Inside Dia. -Stem Clamp Dia. 28. 6 Threadless Top Stack Height7mm, 15mm, 25mm Top Bearing Type Stainless Steel, Cartridge Material Aircraft-Grade Aluminum Weight N/ACane Creek Headset Finder To figure out which headset you need for your particular frame and fork, see Cane Creek's Headset Finder by clicking HERE. | Wolf Tooth Components | Premium Is42/28. 6 Upper Headset | Black | 7Mm Stack