Features: Made of durable electroplate steel-- more safety Made of non-slip foam pads&rubber stoppers-- provide secure and comfortable&extra stabilitu Easy to assemble---simply fix the rubber stoppers with screw onto the door frame and turn the bar clockwise until the end is pressing tight against the fame. Easy to remove---this bar extends and retracts on each side as you twist the center section so it can be easily removed when not in use. Variety of possible exercises---push-up,chin-up,sit-up,leg stretch,twist,twist the waist,leg swing Package content : 1 Heavy Duty Pull Up Chin Up Bar Doorway Home DoorExercise Sports Gym Mounted Note: Ensure the bar is fixed tightly&securely before beginning exercise Maintenance: Clean the bar with anti-rust oil, which keeps long-term using.