8mm x 6mm x 2.7mm bottom block. Manufactured by TorsionK. Extra thick standard size bottom block that can be used on many pre WWI to pre WWII clock pendulums that have an extra wide opening on the pendulum hook. This block is too thick for any post WWII clock.

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!