Two adaptive grippers 2 fingers 85 were used in a national (French) collaborative robots contest. The event took place on February, 5th at the ?Centre d?intégration Nano-INNOV? (Palaiseau, France). Our adaptive grippers were mounted on a dual-arms Universal UR5 robot. The display was part of a thesis jointly driven by Le Centre de Robotique de l?Ecole des Mines Paris Tech and PSA Peugeot Citroën. The topic of this thesis is ?Robotics and virtual reality?. The study focuses on assessing the acceptability conditions of human/robot collaboration by using virtual reality. The application was mounting engine air connections.