You make the object invisible, which makes it undetected to all creatures, though a creature can attempt to find it and make it merely hidden on a success.
Concentrate
Illusion
Manipulate
Rank
1
Traditions
Arcane, Occult
Traits
Concentrate, Illusion, Manipulate
Cast
2 actions
Range
touch
Targets
1 object
Duration
1 hour
You make the object invisible, which makes it undetected to all creatures, though a creature can attempt to find it and make it merely hidden on a success. If the item is used as part of a hostile action, the spell ends once that action is complete. Making a weapon invisible typically gives no advantage on the attack, except that an invisible thrown weapon or piece of ammunition can be used without necessarily revealing the attacker's hiding place, unless the weapon returns to the attacker.
Heightened
3rd
The duration is until the next time you make your daily preparations.
7th
The duration is unlimited.
Source: Pathfinder Player Core 2, p. 247
Bring Invisible Item into a Pathfinder 2e game with The DM Screen.