Spring mechanism type 50M/ spring shaft type 50 W
![](/fileadmin/titgemeyer/rieko/images/product-icons/TM_Product_icons_Fastening_technology_Roller-shutters_M.png)
They offer high stability and a long service life, are optionally available with pre-tensioning or fine adjustment and fit Roll-To 35 and Roll-To 40.
Spring shaft Roll-To 50
![](/fileadmin/titgemeyer/rieko/images/product-icons/TM_Product_icons_Fastening_technology_Roller-shutters_M.png)
This spring shaft guarantees high stability and a particularly long service life, is optionally available with preload or fine adjustment and is suitable for Roll-To 50.