Did you ever build a Meccano set when you were a kid? Well this is no less of a chore only heavier and equally satisfying when you are done. Packaged such that perhaps 30% of the weight is in packaging alone and can survive anything that the worst shipping carrier can throw at it. quarter of the installation time is spent unpacking this. Heavy grade steel with what appears to be durable semi-gloss powder coating. Time will tell its longevity. Pretty straight forward construction, you can measure and align to your hearts content but in the end it is just making sure everything is symmetrical b/w left and right parallel to the trucks center line. Once everything is tightened up it is like a stiff claw holding the truck bed. Very down to earth, honest, helpful and friendly customer service both pre and post sale.