1 Henry VI: quillets

From William Shakespeare’s Henry VI, part 1 (II: 4):


Between two hawks, which flies the higher pitch;
Between two dogs, which hath the deeper mouth;
Between two blades, which bears the better temper:
Between two horses, which doth bear him best;
Between two girls, which hath the merriest eye;
I have perhaps some shallow spirit of judgement;
But in these nice sharp quillets of the law,
Good faith, I am no wiser than a daw.

quillets: Subtilty; nicety; quibble; fine or subtle distinctions