Please note that: 26inch is the same with 27.5inch. NANLIO Bicycle Air Fork Rebound Adjustment MTB Suspension 26/27.5/29 Straight/Tapered RL/LO Mountain Fork For Bike Quick Release. Size: 26 inch, 27.5 inch, 29 inch. Look out: Lookout (LO) / Remote Lockout(RL).Travel: 100mm (120mm refers to the exposed stroke And 100mm is the actual active stroke). Crown: Forged in magnesium alloy. Steerer: Alloy Straight tube: 28.630221mm; Tapered tube: 28.639.8258mm. With damping rebound adjustment (+ -).