Specialized top block with 3.9mm shaft used on certain pre WWII clocks that are equipped with suspension brackets 5, 9, 11, and 14, as well as some other suspension brackets that are not documented in the repair guide. Manufactured by TorsionK. The shaft may be filed down if necessary.

We can help you find the right blocks for your clock, assemble your suspension unit to the proper dimensions, install the suspension unit on your clock, and put the clock in beat. Any questions, just ask!