When punching hollow profiles, an internal support must be used, otherwise the profile will be distorted as a result of the punch. Shoham's punch tools for hollow profiles provide a suitable solution and support by an inner die. The die is permanently adjusted to a 1-2m long mandrel. When entering the profile through the mandrel, a perfect punch result can be achieved anywhere along the profile – up to 2m away from its edges.
Used for perforating holes of locks and handles which are located away from the edges.