I just got this and it took me from opening the packing to assembling and done in less than 30 minutes with goofing around. It comes with everything you need. Very easy instructions and the font size is made for an 80-year-old could see.
I have a standard bathroom doorway, no need for the extender but it comes w/ it for a wider doorway.
It’s very light and sturdy. Don’t buy the others that don’t have a lot of surface area in the back for support against the top doorway to counter your weight.
The handles or grip areas are nicely padded and you can always roll a towel over it if it starts to wear out due to use…
You can also take it down from a pullup bar to a dip or push up bar on the floor…it’s sturdy enough.