2” Heavy-duty stainless steel Tri-Clamp is used to secure the MISCO VIP1 or VIP2 inline refractometers sensors to any mating 2” stainless steel Tri-Clamp Fitting. Once the clamp is positioned around the sensor, gasket, and mating fitting, the wingnut is turned until it is hand-tight. No tools are needed to install or uninstall the refractometer.