Photo 1 of 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)

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Photo 1 of 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)Photo 2 of 3/4'' NPT Male Hex Head Stainless Steel Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass (3/4'' NPT Male)