This style doorway pull up bar is designed with two widening anti-skid devices on both sides.It's very simple to installno need to drill and no need screws ,this door gym weight limitation is over 200kg (440lbs ) so can guarantee safety during workout exercises.
This style doorway chin up bar also allows you to perform a variety of upper body strengthening exercises such as sit-ups, push-ups, dips, crunches and even stretching.
Happy Fitness other different styles pull up bars :
Happy Fitness doorway pull up bar/Chin Up Bar Test Report
EASY ASSEMBLE,No Screw, No Holes: The portable pull up used Safe Mechanical design.
Double Stability & Protection: 1.0in extra-thick foam and ADDITIONAL FOAM PADS, increase stability and prevents scratch or damage on the door frame.
USE IN DIFFERENT LOCATIONS - Multiple screw-in door mount kits give flexibility to move to different places or heights. Adjusts to fit standard door ways between 26 and 39 inches. It's perfect for your home, garage, gym or the office.