Additional cost for Net Part of Ring Trawl Net wit Back Catalog number: 438703-020 Availability: In the manufacturer's stock Price on request - + Recommended 450010 Set of 12 Experimental Bottles (Serial No. xx) Price on request A179-100 Aluminium Bottle 100ml Price on request 443593 Visibility Disc acc. to Secchi, dia. 30cm,10m stee Price on request