The hexagonal wrench (TL40015) that comes with the unit is flimsy and difficult to use, resulting in severe rounding in one of the SC1003 screws. Many screw holes are not properly set and aligned: the two side panels (B) are slightly misaligned with each other, with one panel half a centimetre higher than the other. This means one of the screws used for attaching the table top will be loose and not fully screwed in. The overall quality of the unit doesn't warrant the price tag. The entire cart is out of kilter when assembled with one caster slightly off the ground. Even when locked the cart still moves with the slightest nudge. I regret the purchase and would ask for a refund if it weren't for the fact that I don't want to go through the trouble of repackaging it and sending it back.