The Backplate, a plate, ordinarily comprised of stainless steel, from time to time aluminium or carbon fibre composite, and that is held towards the diver's again via the harness, and also to which the diver's Major cylinder or cylinders are connected. All scooters give diverse buoyancy solutions and you’ll need https://www.saludcapital.gov.co/sitios/VigilanciaSaludPublica/Lists/Contactenos/DispForm.aspx?ID=2972663