welcomeget DFS Cool-a Mountain Bike Fork Air Suspension Rock Shox 26" 100mm 1 1/8 Disc 1911 (black) Pitch:125MM Stanchion:300 MM butted steel tube Steerer tube:1-1/8 AL 7050 and Crown:forged AL 6061 T6 Lower:one piece magnesium Spring:adjust air spring