Van 't Hek from Zuid-Oost Beemster (NL) owns some GLSK piling rigs, like this Hitachi KH150-3 GLSK.
Big advantages of these machines is that they can be transported complete. The leader is catches by the frame. The counterweight is removable in order to reduce the transport mass.
The Hitachi KH150-3 base machine. Big difference with the GLS rigs is the missing A-frame.
This machine is mainly used to drill HEK-piles.
As engine is a Deutz BF12 L 513 used.
The rotary drill is this Woltman WG40.
GLSK are not used a lot in the Netherlands, so far as a I know this machine is bought used from abroad. Ballast Nedam also had a Hitachi KH150-3 GLSK.
With assist of the Hitachi KH150-2 assist crane is the pile filled with rebar and concrete.