LASCO 17-6229 3/8-Inch Compression by 1/4-Inch Compression Brass Union 3/8" x 1/4" Brass Compression Union 3/8" x 1/4" Compression Union Reducer union Lead free brass construction Reducer union Lead free brass construction Lead free approved product in all states Used with plastic and copper tubing 3/8-Inch compression by 1/4-Inch compression