"Is it left-handed?" OR "Is it for left-handed?"
Which one is correct way to ask whether something is specially made for left-handed?
A left-handed guitar
is a valid sentence and this assures me that my way of asking is proper.
I bought a guitar for you. ~ Thanks, but is it left-handed?
Somehow, to me, this way of asking seems better. Because left-handed is an adjective which in this context better take preposition for:
I bought a guitar for you. ~ Thanks, but is it for left-handed (like me, which is understood)?