Finisher

Webster's Dictionary of the English Language

·noun Something that gives the finishing touch to, or settles, anything.

II. Finisher ·noun One who finishes, puts an end to, completes, or perfects; ·esp. used in the trades, as in hatting, weaving, ·etc., for the workman who gives a finishing touch to the work, or any part of it, and brings it to perfection.