I bought 4 of these to try to bring some order to our garage. At 65, with shoulder and arm problems, I worried about putting it together. To my amazement, I was able to put all 4 of the shelves together--without help--in less than 15 minutes. No, screws, no bolts, no tools needed! Didn't need instructions! Perfect. These are sturdy, too. Couldn't be happier.