Freddie "Saddam" Maake claims to have invented the X by adapting an aluminium version as early as 1965 from a bicycle ____ after removing the black rubber to blow with his mouth. He later found it to be too short and joined a pipe to make it longer. He says the instrument was banned as authorities ruled it a dangerous weapon, which prompted him to find a plastic company that could manufacture it.In 2001, South Africa-based company Masincedane Sport began to mass-produce a plastic version.What is being referred here?