John Guest - Connettore valvola BSP 1/4" x 3/4 : Amazon.it: Fai da te
Amazon.com: John Guest Style Quick/Fast Speedfit 1/4" x 1/4" inch for Reverse Osmosis RO JG Acetal Copolymer Push-To-Connect Tube Fitting, Union Straight Connector, Tube OD : Industrial & Scientific