M4 6 8 10 12 14 16 18 20 1/8" 1/4" 3/8" 1/2" 3/4" 1" BSP NPT Female Hex Coupling Reducer Connector Pipe Fitting 304 Stainless

M4 6 8 10 12 14 16 18 20 1/8" 1/4" 3/8" 1/2" 3/4" 1" BSP NPT Female Hex Coupling Reducer Connector Pipe Fitting 304 Stainless

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