1/4"OD x 25' Refrigerator Ice Maker Install Plastic Tubing Kit W/Piercing Valve and 1/4" Brass Union PT25 Each kit contains Supco® 's unique 'Self Tapping Valve' and all the fittings necessary for installations with copper or plastic tubing. Features/Benefits * Installs quickly and easily with Self Tapping Valve * Includes valve, 25' of ¼" plastic tubing and fittings. * Water lines do not have to be drained * Water does not have to be shut off * Can be installed under any sink, or from any branch line