The Support Stand / Converter Clamp is designed to securely hold the EpiShear converter/probe assembly. This helps ensure that the probe tip remains at a constant depth in your samples, so you get more consistent, reproducible results. It also prevents the probe tip from touching the sides of the tube when it is activated; touching the tube can cause the probe to not vibrate properly, and it may damage the probe and/or melt the tube. After positioning the converter clamp, the metal base and 1/2" support rod keep the converter/probe where you want it.