The Kelvin crocodile clip is ideally suited to Sonel devices, especially the MZC-310S, MMR-620, MMR-630, PAT-806, PAT-806-IT and MMR-650 models. It was made of PVC, characterized by high resistance to external factors. Due to the fact that it is a thermoplastic material, it retains its form only at room temperature. The clip is red and blue.