This is the worst piece of junk . I've been building built ins for many a year and always found Black & Decker to be half way decent but somebody was sleeping on this one,never again and the instructions made by someone who was an idiot. I had to put my own bolts lock washers and locking nuts. Probably have to get a piece of 3/4 inc sanded plywood to secure the top of the work bench. This is rated for 500 pounds I wouldn't put 50 pounds on it.