Glorious Workbench black

I am satisfied for the characteristics and this product have a big potential. The bad part is the construction, the metal rail is no longer functioning, the metal balls were falling one by one, at this time I cannot use the lower keyboard manager.On the other hand the wood texture/surface has lost its color, uneven, from place to place and I have not found a way to clean it in a regular manner, it is discolored from place to place. I'll be happy to see in the future, at a higher price the same product having a more quality wood texture material, solid metal rails that can support more weight, and a more controllable way to fix the rackable screws.