FLOW INDICATOR Back Catalog number: 538 Availability: In the manufacturer's stock Price on request - + Recommended FS1.3-5 FS adaptor 1/16", for .3mm OD, Valcon T, 5/p Price on request JR-ZN1-5 Nut, SS, 1/16", Valco type, 10-32, 5/pkg Price on request P-309 Plug - Delrin, 1/4-28 Flat-Bottom Price on request