finisher

US /ˈfɪn.ɪ.ʃɚ/
UK /ˈfɪn.ɪ.ʃɚ/
"finisher" picture
1.

a person or thing that completes or finishes something

:
He's a strong finisher in races, always pushing hard at the end.
The machine acts as a perfect finisher for the product, adding the final polish.