Stainless Steel Barbed Hose Fittings, Josaton stainless steel 1/4 barb fitting has good corrosion and rust resistance, wear resistance, and durable, pressure and high temperature resistance, can be used in a variety of occasions and environments. 1/4" NPT to 1/4" Barb Hose Barb Fittings. Whether you're a professional plumber or someone who likes to do their own remodeling, this 1/4 npt to 1/4 barb kit is ideal for you to create fulfillment in your field! NPT thread size is a nominal pipe size and it does not represent the actual diameter. Please measure your pipe by yourself first, to confirm whether this product meets your needs before purchasing!