To start off with unless you have small hands and want to waste your time use the 2 Allen's wrenches supplied.
I had to use a flexible spring shift socket set with a T-25 head.
Set will hold a 300lbs person.
The direction are a little confusing for increasing the stability as you build it.
Kudos to the manufacturer for quality assurance , because a portion of the holes had the rattan wrap over them increasing the difficulty of lining up the supplied bolts.
If you undertake the assembly yourself follow the directions of NOT tighing before completely assembled!!!!!!!!!!