This is a nicely built unit and the parts are nice and sturdy except for the plastic nut inserts that go into the platform. These nut inserts are the nuts that the screws go into that hold the riser legs at each end. The nut inserts basically got pushed out when the screws were inserted. So I went to our local Ace hardware store and bought metal nut inserts that screw into the shelf platform. This caused an issue since the platform appears to be a very dense pressed paper material and when the metal insert was screwed in the material around the nut swelled up and was not longer flat. Flat is needed for the riser legs to be solid with the platform. I ground down the swelled material till it was flat and installed the screws for the riser legs and it is now rather sturdy. Moving the unit frontwards or backwards will be fine but if you pull it sideways the nut inserts may be pulled out if there is enough weight on the shelf when it is moved without being lifted first. With that in mind I am happy with this unit and will be careful of this fact in the future when it needs to be movedThis is one of those outstanding products that exceeds expectations, even after careful (online) searching. Assembly is limited to screwing in just four screws--two each to attach both of the legs--and Safco even includes an Allen (hex) wrench with which to do it. Other than that, the only other "assembly" is sliding in the four binder support columns, which can be positioned independently anywhere along the length of the shelf (or removed entirely) without the use of any tools. Even the rear lip, which is very sturdy and about an inch tall, comes attached.The legs feel like lightly texturized die-cast aluminum -- they are incredibly solid, very similar to the black wrought-iron supports you find on some fancy outdoor benches and fences or gates. The top has nine small grooves running the entire width of the shelf, the last and largest of which is to support the outside end of the upright supports.The top surface itself is very textured with micro-grooves running parallel to the large grooves; the result looks and feels to the touch almost like the surface of a vinyl record, but with even finer grooves. At a distance the micro-grooves add just a little bit of sheen to the shelf, which looks sophisticated. However, it's clear that the micro-grooves are there for functional rather than aesthetic reasons, as they add an effective amount of non-slip texturing.Overall this product oozes strength and quality (in that order). My only wish is that it came in a choice of colors, because I would have preferred dark brown to match my desk more closely. But it is a wonderful unit and very easily worth the price.I'm six feet tall, and I can see where this riser might be a bit high for some for computer monitors. I still wouldn't hesitate to buy as you can use the shelf to get phones, speakers, books, etc. up off your work surface. But I like having monitors high as it keeps your posture up when working. I have a design company running from a home office and had 3 monitors elevated on books on an Ikea desk. Some of my days go 16 hours and I've been needing a chiropractor to adjust my neck from craning it to the side. I've now got a 20" iMac and 19" PC monitor up on the riser and it's a major improvement for a small investment. This product is much better looking than the picture shows. It doesn't have the rubberized look in the photo. It's more of a matte black texture. There was some minor scuffing from shipment, but not noticeable and nothing that couldn't be fixed with a magic marker. The product is heavy-duty, but not heavy, and I can see putting 60 lbs or more on it with no trouble. The supports have quality rubber pads to protect your desk. I put bamboo mats down on the surface for protection and a less industrial look. Get yourself an ergonomic armrest, good mouse and keyboard and this riser and you have a great place to work (or watch movies). My desk now has 3 times the open space. Phone, speakers, hard drives, Wi-Fi etc. are all beneath the riser now. I don't write a lot of reviews. This is a premium product for the price.I was so unhappy.. this is the third one I have ordered because in theory it's just what we wanted. We bought one last year, sturdy and fits the desk perfectly but it came with lots of scratches and dings. We were in a rush so we kept it and lived with the condition.Round#2 Ordered another one about two weeks ago and they shipped us one with only one leg in the box.. and bent metal on the product as well as minor scratches and dings.... Had to pack it up and ship it back.... GrrrrRound#3 Ordered another one to finally get what we needed and it came with all parts but you can see where it has been scratched and "spot painted" to cover the damage... Very unsuccessfully, it should embarrass the company to ship something like this. I give up... I guess we will have to paint the thing ourselves but never again SafcoSadly, I have an office full of people who could use this product but not like this...i bought this for my dorm room because i knew the desks and the room didn't have any additional shelving. it is very stable and i really recommend it for extra space.the only problem i had was moving it home. the screws and pegs don't really come out one you assemble it, so i had to bring it home whole which was difficult to maneuver. one of the screws ripped out of the shelf incased in plywood from the shelf (it's not fully steel as i found out--there is plywood underneath). but it should still stand up fine once i glue the peg back in.also, those wire stands holding the binders in the picture are removable.