FOX REAR TRACK SHOCKS 1.5 ZERO LW FT QS3 LW RT QSL LW - 530-1220Quick Switch Technology 3 Position knob to quickly switch between settings Simplified adjustment without taking off your gloves No more counting clicks or detents in freezing conditions Significant changes in ride and handling Rebound adjustments result in quicker recovery from consecutive hits and increased traction with more preload. Lockout setting results in easier side hilling and predictable climbing (limits weight transfer and trenching)