The four leg retainers, at the top underside of the table are made of hard plastic. It is very difficult to insert and screw the four legs into them; this is the first step to assembly. Then, you assemble the two square leg connectors. This part is very difficult because, while connecting one connector isn't too bad, trying to connect the second one is extremely difficult because, there ends up being about a 1/2 gap between the screw holes and the screws. I got my husband to accomplish it, however, after he accomplished all screws started, and then, began tightening all screws, the four hard plastic retainers underneath the very top of the table, where you first insert all four legs, began to crack. The design and angle of the four legs and then the two connectors is not a good one at all. Thus, the end assembly leaves the table wobbly and not sturdy. Since my husband is very efficient at solving these kind of problems, he is working on how to remedy it. I didn't think a return would be accepted since the table is all together. Very disappointed in this purchase.