Even after tightening the bolts really tight, I notice the rack does move a bit when you are doing pullups. I use it for my YouTube channel (Nerdish YT) and it has become my main microphone. Didnt align right. Get them if you are a Razer fan or gear fan or just need a nice quality wireless headset. Strong and easy to use. I love these hooks . it works for my crafting These are very roomy but because they can be worn with thick socks, they are still okay. You also have to make sure that the end of the hook isnt pushing in to the rubber portion of the fattie wheel. Upon starting the app, the gauge pinned itself on red as I held my phone over this keyboard.