do exactly what it says on the tin

verb1

•
(UK, Ireland) To do what is described or what one would expect, with no further explanation needed.
- So if you've got wood to stain and you want it to dry quickly, use Ronseal Quick-Drying Woodstain. It does exactly what it says on the tin. — 1994

forms

did exactly what it said on the tin · done exactly what it said on the tin · doing exactly what it says on the tin · does exactly what it says on the tin