This is a universal stainless steel torque arm to prevent axle spinout in front bicycle forks. Used in electric bicycle and e-bike conversion that use a front hub motor. The spinout plate is 1/4"; (6.5mm) thick, and fits over both 12mm and 14mm motor axles. The Version 3 design is a two piece arm that fits most front forks and uses a pair of hose clamps to secure the arm against the fork blade. Includes a spacer and washer to clear lawyer lips along with required fasteners.