Rola-Chem pH Heavy-Duty Probe - 3 Foot Cable width_2 Inches It is a must have

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Rola-Chem pH Heavy-Duty Probe - 3 Foot Cable width_2 Inches It is a must haveThis is a Rola Chem replacement pH Probe for the Rola Chem controllers. This probe is designed to fit both digital and analog Rola Chem controller systems.