What size sinker is that? No more guessing what size your sinker is, simply slide it into the gauge and you&';ll know just what size it is. WARNING: This product may contain a chemical known to the State of California to cause cancer and birth defects and other reproductive harm. www.P65Warnings.ca.gov Constructed out of machined 1/4" Clear Polycarbonite Small size measures 1-6 oz sinkers Large size measures 8-16 oz sinkers