Pros are it's easy to use, holds up heavy objects, no need to find the studs. Some of the cons are if you ever decide to move whatever your putting up there will be a dime or nicked sized hole in your wall, you probably will also have to leave that big metal piece behind your wall. A couple of them just broke when I was not being rough on them at all, they were brittle ( the ones that broke). The plastic part has to be flush to the wall which can be tricky with stuck sheetrock in back of it. I am pretty satisfied with it, it served my needs.

I used a couple of these to mount a guitar to a plaster wall. Just drilled a couple of pilot holes, then the 1/2" holes (I found a spade bit works really well through plaster), then inserted the plastic pieces with the metal bar on the end through the holes. Pulled the plastic pieces back to get the metal bar seated against the back of the wall, ran the little "cap" up against the wall, and broke off the excess plastic strips. Then I put the wooden guitar hanger against the wall and ran the two screws in. The screws are very heavy duty and I'm sure they'd hold many times the weight of my guitar. I didn't have any problems with cross threading at all. Tightened the screws and wha-la! Beautiful and rock-solid installation.

The best heavy duty wall anchors. These are so much better than the spring type toggles purely for the fact that the bolt can be removed and reinstalled. Look at the load ratings to see if these will be sufficient for the application. The only downside is that when they are removed the hole to fill will probably be a bit bigger as the plastic collar has to be removed.

Our studs are concrete... I swear. Only one drill could get through them and it was a plug in one and even that smoked. So, I did some research! Found these bad boys, GREAT deal for 10! We used 6 just to ease my anxiety and our TV is up high and looking good! That's a 32 inch LG. Not a newer TV. I think I bought it in 2009. These things are a life saver so we didn't have to ship back the mount!

These fasteners are fantastic, and by far the strongest hollow-wall faster I have found.

The only issue I have had is when attempting to use them in a wall with closed-foam insulation, which did not allow the metal attachment piece to rotate parallel to the wall, but I had an issue when trying to use standard toggle hollow-wall fasteners. The difficulty with these particular fasteners arises in the installation, which requires the threaded portion of the fastener to be rotated parallel to the wall (then rotated to be perpendicular to accept the screw once fully inserted in the hollow-wall). I have not experienced this issue when installing the fastener with traditional fiberglass installation.

I would defiantly not hesitate to purchase again.