Herr standard bottom block. Used on Horolovar suspension units 20A, 20B, 23A, 23B, 27A, 27B, 27C, 28B and 28C. Can also be used on many other manufacturer's suspension units.

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!