A 2 piece drive shaft consist of 2 drive shafts 3 ujoints 1 on each end and 1 in the middle with a slip yoke and a hanger bearing. Typical found on longer wheel base vehicles. The one piece is just that, one drive shaft including joints and yoke.
Last edited by Quindel54; 06/29/2014 6:01 AM. Reason: missing word