Most of the pix make these clamps look a bit thin and I had doubts about it being tough enough for my needs. But it’s just the photos. Like most Gibraltar hardware it’s tank-like and good for all devices except perhaps a full 88 note keyboard. I used them as part of a keyboard stand I built from Gibraltar drum rack hardware, and it holds my M-Audio Venom at a pretty good angle with none of the shaking you get from traditional keyboard stands.