Trumpf 2507897 Extension N 160
If you want to cut deeper profiled metal sheets you may find you need to buy & fit an extension to the N160 Nibbler
The extrension piece sits between the body of the Trumpf N160 and the carrier/head that does all the work.
An extension increases the distance between these two points and gets the body of the nibbler out of the way.
This creates more space to get deep in those profiles.