1 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be Refurbished on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum
