Lang Rear Axle 36mm Nut Ratchet Wrench is a reversible ratcheting wrench used to install and remove 36mm axle nuts. Lang Rear Axle 36mm Nut Ratchet Wrench is meant for use on FL Touring® models with 36mm axle nuts. Insert a torque wrench into the built-in 1/2'' square drive to get a torque reading.