This is a TERRIBLE product. First of all, I didnt get all the wings bolts required. Instructions looks like the worst person from IKEA made it. It calls for 2 1/2 inch bolts where they could have used a way shorter one. The parts that are suppose to slide for easy adjustment must be bent cuz it takes the strength of the hulk to pull them out. WAY TOO MUCH MOVEMENT WHILE USING. This product is junk. Buy from a different manufacturer is you want quality.