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Amazon.com: Polar Tech - RB 30 RB30 Re-Freez-R-Brix Foam Refrigerant Pack, 9" Length x 4" Width x 1-1/2" Thick (Case of 3): Industrial & Scientific
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Winters PFQ803LF PFQ-LF Series Pressure Gauge, 2.5" Dial size, 1/4" NPT, 0/60 psi/kpa, Glycerin Filled: Industrial Pressure Gauges: Amazon.com: Industrial & Scientific
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