[Material of Weightlifting Stool]: Made of high-hardness commercial high-quality steel, unique frame and thick support tube, sturdy and durable, can bear 600lbs, effectively prolong the service life [Adjustable Weigch Bench]: The dumbbell bench is designed with 7 backrest cushion positions and 3 stopper adjustments, easy to adjust, one second to complete the adjustment. You could switch to the right position at will during the exercise, effectively improve the effect and time of the whole body exercise and increase the muscle shaping effect