Stainless Steel Barbed Hose Fittings, 1/2" NPT to 3/4" Barb hose barb fittings. 3/4 barbed fitting is highly resistant to corrosion and rust, robust and has a long service life. Whether you're a professional plumber or someone who likes to do their own remodeling, this 1/2 npt to 3/4 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!