The MB-series buoys are mainly used for mooring, marking of fishing gear and cables, pipelines, and different other surface installations. The MB-series buoys are roto-molded from polyethylene (PE) and filled with polystyrene foam (EPS), guaranteeing a compressive strength of 5 mH2O and a density of 250kg /m3. The buoys come complete with hot dip galvanized armature and swivel.