I first saw these on an episode of HGTV Property Brother's and had to have them for a client's home. Easy enough to install on a wall (drywall) and looked fab! Bear in mind even though it says 3 piece it came as a 6 piece (so that you can put the identical pairs together and hang if doing a 3-dimensional shape). In our case we opted to wall mount all 6 pieces (you get the attachments for either wall or hanging applications), they looked a little smaller than anticipated but overall it still was an eye catcher, a beautiful conversation piece and client was happy.   

Pros: metal construction, dual application (wall mount or hang)
Cons: smaller than expected