These things are good, I highly reccomend them. They have an adjustable system that fits to any spacing of rack holes. How many times have you been bitten trying to force in those little rack bolts, only to find that your rack doesn't fit all the holes, and you've got to start over. This one has rails that you screw into, so the holes don't really matter, good solid construction, it looks sleek and feels sturdy, has a plastic top over the wood, not cheap painted plywood like some rack cases, I can't see why they don't all manufacture rack cases this way. These are the best.