Features: 1, Two Stage Propane Tank fittings 1/2" NPT POL Soft Nose and 3/8" Male flare fittings For 100lbs Cylinder Tank for RV.. 2, The 1/2" Adapter is easy to conect the POL adapter to connect the 1/2 inch Gas Pipe without converter more. 3, 3/8" Male Fitting is Great for Connect a High Pressure Hose for Extension. 4, Made of Solid Brass. 5, The Kits include: 1 of POL Fitting Connect 50lbs, 100lbs tank, 1 of 1/2" Male NPT x 1/4" Female NPT Adapter, 1 of 3/8" Male Flare x 1/4" Female NPT Fitting. 6, The Black wheel will help save energy during connection tanks of propane. .