. The plastic is not as stiff as the actual sm57 mic clips. So you really have to tuck the mic in for it to hold securely. Also, the screws tightened to tilt the mic up and down are not enough to securely hold the sm57's weight without ensuring the mic is evenly balanced on the clamp. Otherwise they will slowly tilt downwards due to the weight of the microphone. In general, they coped with the task. but i wish i could just pay for real sm57 microclips even if they were a bit bigger in comparison. Wouldn't buy again.