Ring Trawl (Calcofi) Net Back Catalog number: 438700 Availability: In the manufacturer's stock Price on request - + Recommended 5005A-50 Stainless Dipper. 60cm. 50cc Price on request 443593 Visibility Disc acc. to Secchi, dia. 30cm,10m stee Price on request 438753-021 Net bag - protective net 300µ for Bongo Net Price on request