HEAVY DUTY CONSTRUCTION: Made of 1.7mm thickened refined heavy steel and the fine powder coating prevent rust and corrosion. It is much better than others just for the extra safety .It can hold up to 440 pounds. And the handles are coated with high fiber foam, comfortable grip, multi-function, anti-slip and wear resistance. MULTI-FUNCTION HOME GYM:Target multiple upper body & core muscles with pull-ups, push-ups, dips, and hanging crunches, multiple functions replace all other equipment. With this pull up bar, home and office become your gym and you can do exercises in a quick way. UPGRADED DOUBLE SILICONE PROTECTION FOR DOOR FRAME:We have upgraded the traditional foam that contacts the door frame to elastic silicone material. Permanent use,better fits and protects door frame without marks. In addition,the chin up bar comes with a pair of extra 4mm No-Trace removable silicone pads .Why do we add protective pads? Because when we do exercise there is an upward and downward force of friction. So double silicone protection(double insurance)for your door frame is the best way. EASY TO USE DOORWAY PULL UP BAR: Portable design for home exercise pull-ups - can be mounted on any standard 24 "to 32" doorways, easy to install and install. Portable design easily fits on any standard doorway, and is simple to assemble and install. Door frame pull up bar uses leverage to hold against the doorway so there are no screws and no damage to door.