Post style mounts for German clock movements such as Hermle or Urgos. These are an unusual mount to use in a not so typical mounting of the unit. The posts have internal threads on one side that screw right on the threads of the movement post. You would take the hex nut off the movement pillar post, thread this post on top of the threads of the pillar post, then put the movement nut on the threaded end with its washer. This will enable the movement to be mounted onto the back of the wood case but be extended out enough for the pendulum or bells. Set of four 2 inch (5cm) posts with washers.