cardan shaft price
http://wiki.soippo.edu.ua/index.php?title=%D0%9A%D0%BE%D1%80%D0%B8%D1%81%D1%82%D1%83%D0%B2%D0%B0%D1%87:X3mgaob763
It is a joint or combining in a stiff rod that allows the pole to 'bend' in any kind of direction. It can allow favorable transmission of revolving power at a much larger angle than is permissible with a versatile