After you defeat the Eye of Cthulhu, Classic direct drops and the Expert treasure bag each roll the four below once. Each piece is one in four.

Weapon	Class
Eyetooth	Magic
Bloodshot Bomb	Ranged
Bound Gaze Kite	Summon
Shatterfang	Melee

The first three are a gaze set. Shatterfang shares the bag, but it plays as a broadsword, so it has its own page.