Compact Trench boxes KS60 and KS100

KS100:
The KRINGS KS 100 is a versatile trench box for a wide range of shoring tasks. It is the world's most frequently used trench box. Its uncomplicated use in countless variations in terms of trench width, assignment depth, lengths available on site and conventional vertical pipe clearances (up to 1.56 m) make all settings possible within the quoted maximum sizes. Its most cost-effective use is in trenches up to about 6 m deep.
The struts are compatible to the struts of the KS 60 boxes. As on all KRINGS trench boxes, working with this edge-supported compact element in practical sizes is very straightforward inexpensive, safe and reliable. No disturbance to the environment is caused by driving or vibration. The boxes can be installed by placement in the ready excavated trench or by lowering with concurrent excavation.
KS60:
Within its performance class, the strong KRINGS KS 60 is designed for high loading, low weight and a high standard of safety. These features make this lightweight box ideal for shoring in open terrain and for medium-size inner-city trenching applications.
Depending on shoring depth and in consultation with our technical department, the load-bearing capacity can be increased in certain cases.
The struts are compatible to the struts of the KS 100 and can used by means of an adapter for the KVL boxes.
The loads are taken up by the articulated sprung knobs between the struts and the shoring panel. Small excavators can be used for quick and easy box placement and lowering.

[@TheMightyKinkle]

So that is what these things are for! I have been trying to find out for years as i keep seeing on the sides of the road in construction jobs