Store › XYZ Bar™ by Prometheus Gym Equipments® Image 1 of 1 XYZ Bar™ by Prometheus Gym Equipments® $1,190.00 The world’s first and patented three-axis barbell… the XYZ Bar™… brought to you by Prometheus Gym Equipments®. Add To Cart Added! The world’s first and patented three-axis barbell… the XYZ Bar™… brought to you by Prometheus Gym Equipments®.