... In high quality,superior performance and competitive price Inserts,Ferrule,3 pieces for nylon tubing: • Features:3, ... and other tubes.have brass sleeve(insert), cutting ring(ferrule), nut,connector. • Materials:Iron,brass. • Fit ... tube support, copper washercutting ring: other name--Ring, Sleeve, ferrule --------------------------------------------BlueMob. : +86-13655751779Tel: +86-0575-87618856Fax: +86 ...