Only one of the 4 shelves was pre drilled for assembly. The wood was extremely dry and rough to the hand. When I hand screwed (as not to apply to much force with a power screwdriver) the shelf together two of the 3 shelves split along the woodgrain from the screw. I didnt even try the 4th shelf. I communicated with Customers Service and sent pictures and I heard NOTHING and no replacement parts came.