54 plate hijet pickup propshaft

hi my rear u/j on the propshaft is worn badly and needs to be replaced Are these replaceable or  the do i need to buy a new propshaft Looking at the old u/j i cannot see any circlip holding it in place just a ring with recess can anyone advise  many thanks mick

Read this fella!

https://hijet.forumotion.com/t1346-noises-from-my-back-end