Legris 6306 62 00WP2 LIQUIfit Push-to-Connect Fitting, Inline Union, 1/2" Tube OD Inline union to connect two tubes Push-to-connect tube connections on both ends Bio-based polymer body Meets NSF 51, NSF 61 C HOT, WRAS, FDA, ACS, 1935/2004/EC, and RoHS specifications Designed to connect two pieces of tubing not pipes