Nightmare to assemble. AVOID!!! requires two people, however, there is one main tool (called M ) in the set that allows to screw most pieces so the second person can only help by holding the pieces together for a quicker assembly. Too many parts and details. The  corner part doesn’t fit and there are no pre-drilled holes in it. There is no way to put it together without an electric drill. Even with the drill the screws will be sticking out. I had to unscrew the corner part and throw it away and leave just the two benches. Also had to replace the large back bench part because the pre-drilled holes were not deep enough. The replacement part came with the same problem so I had to use an electric drill. Even after drilling the screws I still couldn’t put the wooden buttons to cover the screws because the screws cannot be screwed deep enough! I wouldn’t                     recommend this unit!!!