Nettex Agri Cob-i-sel 60 Without CopperA slow release 60 day cobalt supplement in the form of a micro bolus for finishing lambs that also delivers iodine, selenium and multi vitamins. Developed specifically to help maintain optimum cobalt levels in rapidly growing lambs finishing at grass and produce quality carcasses at finish. Its formulation also makes it ideal for targeted use during the ewe's production cycle, such as at pretupping or around lambing.