Unions connect two lengths of tubing together, further lengthening the plumbing line. Compression fittings are constructed of lead-free brass and are ideal for multiple potable water and other liquid plumbing systems. Each compression connection for each fitting comes with a ferrule and insert for a secure project installation. This type of fitting is ideal for connecting to aluminum tubing, brass pipe, copper tubing and polyethylene tubing. Links two lengths of tubing into one continuous line Constructed of durable, lead-free brass Brass is corrosion-resistant and can be used indoors and outdoors Ferrules are included to compress onto the tubing Inserts are designed for use in vinyl or polyethylene tubing types Applications include air, gasoline, grease, ice makers, oil & water softeners Compatible tube types include aluminum tubing, brass pipe, copper tubing and polyethylene tubing Color/Finish Family: Gold Sub Type: Reducing union Type: Union Diameter (End 1): 1/2-in Diameter (End 2): 3/8-in Connection Type (End 1): Female Connection Type (End 2): Female Fitting Type: Compression For Use with RVs: No Material: Brass Maximum Working Temperature (Fahrenheit): 250 Minimum Working Temperature (Fahrenheit): -65 Package Quantity: 1 CA Residents: Prop 65 Warning(s): Yes Complies with Federal Lead Guidelines: Yes Safety Listing: IAPMO safety listing UNSPSC: 40171700