Ring Trawl (Calcofi) Net Back Catalog number: 438700 Availability: In the manufacturer's stock Price on request - + Recommended 5065A-4501 Telescopic Rod. - 1.7m to 4.5m Price on request 438183-020 Additional cost for Net Part (one single net each) Price on request 438650 Stream Bottom Sampler, Surber Type, mesh size 500 Price on request