Rothenberger
The spring is required to sit under the interlock clip. It forces the clip upwards so you can lock to Rocases together.
![Rothenberger Pressure Spring to suit Rocase](https://digitalassets.reecegroup.com.au/m/c8d1cbdf9258730a/Web_280x210-Rothenberger-Pressure-Spring-to-suit-Rocase.jpg)
![Rothenberger Pressure Spring to suit Rocase](https://digitalassets.reecegroup.com.au/m/c8d1cbdf9258730a/Web_1200x900-Rothenberger-Pressure-Spring-to-suit-Rocase.jpg)
Rothenberger
The spring is required to sit under the interlock clip. It forces the clip upwards so you can lock to Rocases together.