4-Pack 1/4 Inch Female Hex Couplings, 1/4” NPT Female Brass Hex Nipple Adapters
【MULTI-FUNCTION】: This female pipe coupling is a great item for both DIYers and professional plumbers! 【EXCELLENT THREADS】: The deep threads allow the fittings to be better engaged with the object to enhance fixation, and the smooth threads make installation easier and faster.