Holder set for securely mounting a tablet pc on the windscreen of a vehicle and for placing it on a desk using the stand function with an extra strong dual suction cup system for secure attachment set comprising universal holder for a tablet pc 4 talon locking system 4quickfix system adjustable holding jaws suitable for devices with a width between 12 and 225 cm and a depth of up to 2 cm suction cup bracket self adhesive suction adapter for mounting on smooth surfaces 4 talon locking system 4