spring cage specification: Mesh: 9-ply polythene Mesh size: 2CM Metal prop: galvanized spring steel, 3.8MM, 4.0MM We can produce as the customer's demand.This kind of fishing net is mainly for catching crab, finless ell and loach and other fish by the sea or in a pond. It is wear-resisting, high strength and toughness, and can be used for a long time. (best quality)spring cage