15-4-4 Union Connector 1/4 Inch Tube OD x 1/4 Inch Tube OD - Ideal for Hydraulic and Pneumatic Systems

15-4-4 Union Connector 1/4 inch Tube OD x 1/4 inch Tube OD You can use this part to connect two 1/4 tubes ends to each other, Measure the 1/4 Tube Outside diameter. Compatible with most types of Reverse osmosis, RO.DI water filter tubes and systems.