Horolovar 12 pack assorted popular strengths temperature compensating 400 day clock pendulum suspension springs. 12 springs per package. Each spring is 7-1/4" long. The assortment consists of  one spring of each of the following sizes :

.0020" - .051mm 
.0023" - .058mm  
.0023" - .058mm  
.0025" - .064mm 
.0030" - .076mm 
.0032" - .081mm 
.0032" - .081mm 
.0035” - .089mm 
.0035” - .089mm 
.0037" - .094mm 
.0040" - .102mm 
.0040" - .102mm

We can help you find the right suspension springs 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!