Filter, carbon, 30mm × 30mm,pk 4 Back Catalog number: R-FLTR4 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended U-FV002 Ferrule, 1/16” × 1/16” graphite/Vespel, pk/10 Price on request C-UNS100 Unions, 1/4 "–1/4 ", SS&1/4 " PTFE ferrs,pk100 Price on request U-FV008 Ferrule, 1/4in x 1/8in Graph Vesp, pk 10 Price on request