5DEV Crank Spindles - precision made for perfect fit and power. CNC-machined premium 7075 aluminum and hard-anodized these spindles deliver rock-solid stiffness low weight and exact tolerances for smooth bearing interfaces and silent running. Multiple lengths let you dial Q-factor and chainline to your frame drivetrain and riding style.ONLY compatible with 5DEV cranksPrecision-machined for optimal stiffness-to-weight and durabilityHard-anodized surfaces for wear and corrosion resistanceEasy swaps for setup changes or frame moves