If you have broken or missing clamp cylinders then we have the product for you. They are suitable for most brands of machines, such as Pertici and Elumatec.
We have for sale these 40mm diameter, 160mm long.
The end thread is M10 size.
The end cap shown is an optional extra. The price for these is £5 each.
These can be found here: http://www.window-machinery-search.co.uk/wms-clamp-pad-foot-absorber/prod_419.html