Expansion screw fixing: all steel inner forced expansion screw wall mounting, strong bearing capacity 5.Safety load-can withstand 3 people, load 200 kg, provide users with higher security, prohibit hollow wall installation, can only be installed on solid wall Multi-function use-This door bar is suitable for pull-ups, pull-ups, sit-ups, knees, sit-ups, triceps, legs and so on. High-quality steel: pipe diameter 32mm/1.25In, anti-rust electrostatic spray feels good, integrated welding technology, stable load bearing performance, strong and durable Thickened steel plate: 2mm special steel plate installation piece is safe and stable.Quality assurance! There will be no rocking and unstable situation like ordinary pull-ups