4Pcs Brass Hose Barb Fittings 5/16″ Hose Barb to 1/4 NPT Male Thread Air
PRECISE THREADS: Hose barb end is tightly connected with hoses, NPT threads are designed with deep and accurate thread to ensure tight and no leak connection and easy installation. Can use teflon tape before installation to further strengthen the seal and prevent air leakage.