As nouns the difference between mandril and mandrin
is that mandril is while mandrin is (medicine) a metal wire or stylet inserted into a flexible catheter to give it shape and firmness while passing through a hollow tubular structure.
mandrin
English
Noun
(
en noun)
(medicine) A metal wire or stylet inserted into a flexible catheter to give it shape and firmness while passing through a hollow tubular structure.
Synonyms
* mandrel